From 32f21f08ffe1b0e3cd5b19b89c7530892e71a6c1 Mon Sep 17 00:00:00 2001
From: ljz <425868052@qq.com>
Date: Mon, 3 Aug 2026 17:07:21 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E5=8F=82=E6=95=B0=E8=A1=A8?=
 =?UTF-8?q?=E6=A0=B7=E5=BC=8F=E4=B8=8E=E7=A7=91=E5=AD=A6=E8=AE=A1=E6=95=B0?=
 =?UTF-8?q?=E6=B3=95=E6=94=AF=E6=8C=81?=
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Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 frontend/src/App.tsx                       | 171 +++++++++++---
 frontend/src/ParameterTable.tsx            |  46 +++-
 frontend/src/parameterExpression.ts        |   8 +
 frontend/src/styles.css                    | 126 ++++++++---
 frontend/tests/e2e/fixtures.ts             |  10 +
 frontend/tests/e2e/parameter-table.spec.ts | 250 +++++++++++++++++++++
 6 files changed, 547 insertions(+), 64 deletions(-)

diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index e2d8b0b..7cf6c79 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -100,6 +100,7 @@ import {
 import {
   evaluateParameterExpression,
   isParameterExpressionValue,
+  isScientificNotationValue,
 } from "./parameterExpression";
 import {
   WorkspaceViewTabs,
@@ -108,6 +109,10 @@ import {
 
 type ParameterValue = number | string;
 type UnitQuantity = string;
+type ParameterScientificNotation = {
+  text: string;
+  unit: string;
+};
 type PortKind = "physical" | "signal";
 type PortNominalRole = "inlet" | "outlet" | "bidirectional" | "input" | "output";
 type PortSide = "left" | "right";
@@ -255,6 +260,7 @@ type SimulationNodeData = {
   ports: PortDefinition[];
   parameters: Record<string, ParameterValue>;
   parameterUnits: Record<string, string>;
+  parameterScientificNotation: Record<string, ParameterScientificNotation>;
   rotation: NodeRotation;
   mirrored: boolean;
   portConnectionStates?: Record<string, PortConnectionState>;
@@ -288,8 +294,12 @@ type ProjectNodePayload = {
     x: number;
     y: number;
   };
-  data: Omit<SimulationNodeData, "parameterUnits"> & {
+  data: Omit<
+    SimulationNodeData,
+    "parameterUnits" | "parameterScientificNotation"
+  > & {
     parameterUnits?: Record<string, string>;
+    parameterScientificNotation?: Record<string, ParameterScientificNotation>;
   };
 };
 
@@ -1199,6 +1209,7 @@ function buildNodeData(definition: ComponentDefinition): SimulationNodeData {
     ports: definition.ports.map((port) => ({ ...port })),
     parameters: defaultParameters(definition),
     parameterUnits: defaultParameterUnits(definition),
+    parameterScientificNotation: {},
     rotation: 0,
     mirrored: false,
   };
@@ -2709,6 +2720,7 @@ function DeferredNumberInput({
     <input
       aria-invalid={invalid}
       aria-label={ariaLabel}
+      className="parameter-number-input"
       inputMode="text"
       onBlur={() => {
         editingRef.current = false;
@@ -3971,34 +3983,62 @@ function FlowWorkbench() {
     const unit = findUnitOption(definition, selectedUnit);
     const normalizedDisplayValue = displayValue.trim();
     const numericValue = Number(normalizedDisplayValue);
-    const baseValue =
-      normalizedDisplayValue === "" || !Number.isFinite(numericValue)
-        ? normalizedDisplayValue
-        : unit.toBase(numericValue);
+    const hasFiniteNumericValue =
+      normalizedDisplayValue !== "" && Number.isFinite(numericValue);
+    const convertedBaseValue = hasFiniteNumericValue
+      ? unit.toBase(numericValue)
+      : numericValue;
+    const baseValue = hasFiniteNumericValue
+      ? convertedBaseValue
+      : normalizedDisplayValue;
+    const scientificNotation =
+      hasFiniteNumericValue &&
+      Number.isFinite(convertedBaseValue) &&
+      isScientificNotationValue(normalizedDisplayValue)
+        ? { text: normalizedDisplayValue, unit: selectedUnit }
+        : null;
 
-    updateSelectedNode((node) => ({
-      ...node,
-      data: {
-        ...node.data,
-        parameters: {
-          ...node.data.parameters,
-          [key]: baseValue,
+    updateSelectedNode((node) => {
+      const parameterScientificNotation = {
+        ...node.data.parameterScientificNotation,
+      };
+      if (scientificNotation) {
+        parameterScientificNotation[key] = scientificNotation;
+      } else {
+        delete parameterScientificNotation[key];
+      }
+      return {
+        ...node,
+        data: {
+          ...node.data,
+          parameters: {
+            ...node.data.parameters,
+            [key]: baseValue,
+          },
+          parameterScientificNotation,
         },
-      },
-    }));
+      };
+    });
   };
 
   const updateSelectedChoice = (key: string, value: number) => {
-    updateSelectedNode((node) => ({
-      ...node,
-      data: {
-        ...node.data,
-        parameters: {
-          ...node.data.parameters,
-          [key]: value,
+    updateSelectedNode((node) => {
+      const parameterScientificNotation = {
+        ...node.data.parameterScientificNotation,
+      };
+      delete parameterScientificNotation[key];
+      return {
+        ...node,
+        data: {
+          ...node.data,
+          parameters: {
+            ...node.data.parameters,
+            [key]: value,
+          },
+          parameterScientificNotation,
         },
-      },
-    }));
+      };
+    });
   };
 
   const updateSelectedParameterUnit = (key: string, unit: string) => {
@@ -4181,7 +4221,9 @@ function FlowWorkbench() {
         key === "method"
           ? value
           : normalizedValue !== "" && Number.isFinite(numericValue)
-            ? numericValue
+            ? isScientificNotationValue(normalizedValue)
+              ? normalizedValue
+              : numericValue
             : normalizedValue,
     }));
   };
@@ -4961,6 +5003,7 @@ function FlowWorkbench() {
                 baseValue,
                 definition,
                 selectedUnit,
+                selectedNode.data.parameterScientificNotation[key],
               );
               const mediumDefinitionIndex =
                 isAmesimGasMediumDefinition(selectedDefinition) && key === "gi";
@@ -5249,7 +5292,7 @@ function FlowWorkbench() {
   ];
   const parameterTableAvailableWidth = Math.max(
     0,
-    modelingPaneLayout.propertiesWidth - 24,
+    modelingPaneLayout.propertiesWidth,
   );
 
   return (
@@ -5900,6 +5943,9 @@ function buildProjectPayload(
         ports: node.data.ports.map((port) => ({ ...port })),
         parameters: { ...node.data.parameters },
         parameterUnits: { ...node.data.parameterUnits },
+        parameterScientificNotation: {
+          ...node.data.parameterScientificNotation,
+        },
         rotation: normalizeNodeRotation(node.data.rotation),
         mirrored: Boolean(node.data.mirrored),
       },
@@ -5915,6 +5961,33 @@ function buildProjectPayload(
   };
 }
 
+function normalizeParameterScientificNotation(
+  value: unknown,
+): Record<string, ParameterScientificNotation> {
+  if (!value || typeof value !== "object" || Array.isArray(value)) {
+    return {};
+  }
+  const normalized: Record<string, ParameterScientificNotation> = {};
+  Object.entries(value as Record<string, unknown>).forEach(([key, entry]) => {
+    if (!entry || typeof entry !== "object" || Array.isArray(entry)) {
+      return;
+    }
+    const candidate = entry as Record<string, unknown>;
+    if (
+      typeof candidate.text !== "string" ||
+      typeof candidate.unit !== "string" ||
+      !isScientificNotationValue(candidate.text)
+    ) {
+      return;
+    }
+    normalized[key] = {
+      text: candidate.text.trim(),
+      unit: candidate.unit,
+    };
+  });
+  return normalized;
+}
+
 function normalizeLoadedNode(
   node: ProjectNodePayload,
   componentDefinitions: ComponentDefinition[],
@@ -5935,6 +6008,9 @@ function normalizeLoadedNode(
   const parameterUnits = definition
     ? { ...defaultParameterUnits(definition), ...(node.data.parameterUnits ?? {}) }
     : { ...(node.data.parameterUnits ?? {}) };
+  const parameterScientificNotation = normalizeParameterScientificNotation(
+    node.data.parameterScientificNotation,
+  );
 
   return {
     id: node.id,
@@ -5953,6 +6029,7 @@ function normalizeLoadedNode(
       ports: normalizeLoadedPorts(node.data.ports, definition),
       parameters,
       parameterUnits,
+      parameterScientificNotation,
       rotation: normalizeNodeRotation(node.data.rotation),
       mirrored: Boolean(node.data.mirrored),
     },
@@ -6190,6 +6267,7 @@ function displayParameterValue(
   baseValue: ParameterValue,
   definition: ParameterDefinition,
   selectedUnit: string,
+  scientificNotation?: ParameterScientificNotation,
 ) {
   if (typeof baseValue === "string" && baseValue.trim() === "") {
     return "";
@@ -6198,7 +6276,16 @@ function displayParameterValue(
   if (!Number.isFinite(numericValue)) {
     return String(baseValue);
   }
-  return formatEditableNumber(findUnitOption(definition, selectedUnit).fromBase(numericValue));
+  const displayValue = findUnitOption(definition, selectedUnit).fromBase(numericValue);
+  if (
+    scientificNotation &&
+    isScientificNotationValue(scientificNotation.text)
+  ) {
+    return scientificNotation.unit === selectedUnit
+      ? scientificNotation.text.trim()
+      : formatScientificEditableNumber(displayValue, scientificNotation.text);
+  }
+  return formatEditableNumber(displayValue);
 }
 
 function formatEditableNumber(value: number) {
@@ -6208,6 +6295,38 @@ function formatEditableNumber(value: number) {
   return Number(value.toPrecision(12)).toString();
 }
 
+const SCIENTIFIC_NOTATION_STYLE_PATTERN =
+  /^[+-]?(?:\d+(?:\.(\d*))?|\.(\d+))([eE])([+-]?)(\d+)$/;
+
+function formatScientificEditableNumber(value: number, notationHint: string) {
+  if (!Number.isFinite(value)) {
+    return "";
+  }
+  const style = SCIENTIFIC_NOTATION_STYLE_PATTERN.exec(notationHint.trim());
+  if (!style) {
+    return Number(value.toPrecision(12)).toExponential();
+  }
+
+  const minimumFractionDigits = (style[1] ?? style[2] ?? "").length;
+  const exponentMarker = style[3];
+  const showPositiveExponentSign = style[4] === "+";
+  const roundedDisplayValue = Number(value.toPrecision(15));
+  const [rawMantissa, rawExponent] = roundedDisplayValue.toExponential().split("e");
+  const [wholePart, rawFraction = ""] = rawMantissa.split(".");
+  let fraction = rawFraction;
+  while (fraction.endsWith("0") && fraction.length > minimumFractionDigits) {
+    fraction = fraction.slice(0, -1);
+  }
+  if (fraction.length < minimumFractionDigits) {
+    fraction = fraction.padEnd(minimumFractionDigits, "0");
+  }
+
+  const exponent = Number(rawExponent);
+  const exponentSign = exponent < 0 ? "-" : showPositiveExponentSign ? "+" : "";
+  const exponentDigits = String(Math.abs(exponent));
+  return `${wholePart}${fraction ? `.${fraction}` : ""}${exponentMarker}${exponentSign}${exponentDigits}`;
+}
+
 function parameterMetadataValue(
   value: ParameterValue,
   definition: ParameterDefinition,
diff --git a/frontend/src/ParameterTable.tsx b/frontend/src/ParameterTable.tsx
index df842b0..8a2be7b 100644
--- a/frontend/src/ParameterTable.tsx
+++ b/frontend/src/ParameterTable.tsx
@@ -2,6 +2,7 @@ import {
   Fragment,
   useCallback,
   useEffect,
+  useLayoutEffect,
   useRef,
   useState,
 } from "react";
@@ -173,7 +174,15 @@ export function ParameterTable({
   availableWidth,
   onColumnLayoutChange,
 }: ParameterTableProps) {
-  const effectiveLayout = effectiveColumnLayout(columnLayout, availableWidth);
+  const tableWrapRef = useRef<HTMLDivElement>(null);
+  const [measuredAvailableWidth, setMeasuredAvailableWidth] = useState<
+    number | null
+  >(null);
+  const resolvedAvailableWidth = measuredAvailableWidth ?? availableWidth;
+  const effectiveLayout = effectiveColumnLayout(
+    columnLayout,
+    resolvedAvailableWidth,
+  );
   const columnDragRef = useRef<ColumnDragState | null>(null);
   const helpPreviewTimerRef = useRef<number | null>(null);
   const helpPreviewAnchorRef = useRef<HelpPreviewAnchor | null>(null);
@@ -181,6 +190,26 @@ export function ParameterTable({
     useState<ColumnName | null>(null);
   const [helpPreview, setHelpPreview] = useState<HelpPreviewState | null>(null);
 
+  useLayoutEffect(() => {
+    const wrap = tableWrapRef.current;
+    if (!wrap) {
+      return;
+    }
+    const measureAvailableWidth = () => {
+      const nextWidth = wrap.clientWidth;
+      if (nextWidth <= 0) {
+        return;
+      }
+      setMeasuredAvailableWidth((currentWidth) =>
+        currentWidth === nextWidth ? currentWidth : nextWidth,
+      );
+    };
+    measureAvailableWidth();
+    const observer = new ResizeObserver(measureAvailableWidth);
+    observer.observe(wrap);
+    return () => observer.disconnect();
+  }, []);
+
   const dismissHelpPreview = useCallback(() => {
     if (helpPreviewTimerRef.current !== null) {
       window.clearTimeout(helpPreviewTimerRef.current);
@@ -258,7 +287,9 @@ export function ParameterTable({
       column === "name"
         ? { ...startLayout, nameWidth: startLayout.nameWidth + boundaryDelta }
         : { ...startLayout, unitWidth: startLayout.unitWidth - boundaryDelta };
-    onColumnLayoutChange(effectiveColumnLayout(proposed, availableWidth));
+    onColumnLayoutChange(
+      effectiveColumnLayout(proposed, resolvedAvailableWidth),
+    );
   };
 
   const startColumnResize = (
@@ -311,11 +342,17 @@ export function ParameterTable({
 
   const nameColumnMaximum = Math.max(
     MIN_NAME_WIDTH,
-    Math.min(MAX_NAME_WIDTH, availableWidth - MIN_VALUE_WIDTH - effectiveLayout.unitWidth),
+    Math.min(
+      MAX_NAME_WIDTH,
+      resolvedAvailableWidth - MIN_VALUE_WIDTH - effectiveLayout.unitWidth,
+    ),
   );
   const unitColumnMaximum = Math.max(
     MIN_UNIT_WIDTH,
-    Math.min(MAX_UNIT_WIDTH, availableWidth - MIN_VALUE_WIDTH - effectiveLayout.nameWidth),
+    Math.min(
+      MAX_UNIT_WIDTH,
+      resolvedAvailableWidth - MIN_VALUE_WIDTH - effectiveLayout.nameWidth,
+    ),
   );
   const tableStyle = {
     "--parameter-name-width": `${effectiveLayout.nameWidth}px`,
@@ -369,6 +406,7 @@ export function ParameterTable({
     <div
       className={`parameter-table-wrap ${activeColumnResize ? `resizing-${activeColumnResize}` : ""}`}
       data-resizing-column={activeColumnResize ?? undefined}
+      ref={tableWrapRef}
     >
       <table aria-label={ariaLabel} className="parameter-table" style={tableStyle}>
         <colgroup>
diff --git a/frontend/src/parameterExpression.ts b/frontend/src/parameterExpression.ts
index 37d8a49..af6547f 100644
--- a/frontend/src/parameterExpression.ts
+++ b/frontend/src/parameterExpression.ts
@@ -13,6 +13,14 @@ const NUMERIC_LITERAL_PATTERN =
 const UNSIGNED_NUMBER_PREFIX =
   /^(?:\d+(?:\.\d*)?|\.\d+)(?:[eE][+-]?\d+)?/;
 
+export function isScientificNotationValue(value: number | string): value is string {
+  if (typeof value !== "string") {
+    return false;
+  }
+  const trimmed = value.trim();
+  return NUMERIC_LITERAL_PATTERN.test(trimmed) && /[eE]/.test(trimmed);
+}
+
 type TokenKind =
   | "number"
   | "identifier"
diff --git a/frontend/src/styles.css b/frontend/src/styles.css
index 51118d5..5420590 100644
--- a/frontend/src/styles.css
+++ b/frontend/src/styles.css
@@ -447,6 +447,17 @@ textarea {
   font-weight: 700;
 }
 
+.properties .panel-title {
+  display: flex;
+  align-items: center;
+  min-height: 32px;
+  padding: 0 10px;
+  border-bottom-color: #c7cdd4;
+  color: #293642;
+  background: #f2f4f6;
+  font-size: 12px;
+}
+
 .palette-list {
   display: block;
   padding: 12px;
@@ -461,13 +472,13 @@ textarea {
 .parameter-table-wrap {
   width: 100%;
   min-width: 0;
-  padding: 0 12px 12px;
-  overflow-x: hidden;
+  padding: 0;
+  overflow-x: clip;
 }
 
 .parameter-table-wrap.parameter-form {
   display: block;
-  padding: 0 12px 12px;
+  padding: 0;
 }
 
 .parameter-table {
@@ -475,27 +486,30 @@ textarea {
   --parameter-unit-width: 72px;
   width: 100%;
   min-width: 0;
-  border: 1px solid #cbd5df;
+  border: 0;
   border-spacing: 0;
-  border-radius: 4px;
+  border-radius: 0;
   color: #263442;
   background: #ffffff;
   table-layout: fixed;
-  font-size: 11px;
+  font-size: 12px;
 }
 
 .parameter-table-head .parameter-table-cell {
-  position: relative;
+  position: sticky;
   z-index: 1;
-  height: 30px;
-  padding: 0 7px;
+  top: 0;
+  height: 28px;
+  padding: 0 8px;
   overflow: visible;
-  border-bottom-color: #bfcbd7;
-  color: #475569;
-  background: #edf1f5;
-  font-size: 10px;
+  border-right-color: #c4cad1;
+  border-bottom-color: #b9c1c9;
+  color: #35414c;
+  background: #e3e6e9;
+  box-shadow: 0 1px 0 rgba(51, 65, 85, 0.06);
+  font-size: 11px;
   font-weight: 700;
-  line-height: 30px;
+  line-height: 27px;
 }
 
 .parameter-table-head .parameter-table-name-cell {
@@ -507,16 +521,21 @@ textarea {
 }
 
 .parameter-table-row {
-  height: 36px;
+  height: 32px;
+}
+
+.parameter-table-head-row {
+  height: 28px;
 }
 
 .parameter-table-cell {
   min-width: 0;
-  height: 36px;
-  padding: 2px 6px;
+  height: 32px;
+  box-sizing: border-box;
+  padding: 1px 7px;
   overflow: hidden;
-  border-right: 1px solid #d9e0e7;
-  border-bottom: 1px solid #d9e0e7;
+  border-right: 1px solid #d5d9de;
+  border-bottom: 1px solid #e1e4e7;
   vertical-align: middle;
 }
 
@@ -524,8 +543,22 @@ textarea {
   border-right: 0;
 }
 
+.parameter-table
+  > tbody
+  > .parameter-table-row:nth-child(even)
+  > .parameter-table-cell {
+  background: #f3f4f5;
+}
+
 .parameter-table > tbody > .parameter-table-row:hover > .parameter-table-cell {
-  background: #f8fbfe;
+  background: #eaf3f8;
+}
+
+.parameter-table
+  > tbody
+  > .parameter-table-row:focus-within
+  > .parameter-table-cell {
+  background: #deedf5;
 }
 
 .parameter-table-row:focus-visible {
@@ -537,16 +570,21 @@ textarea {
 .parameter-table-name-cell {
   overflow: hidden;
   color: #344256;
+  text-align: left;
   text-overflow: ellipsis;
   white-space: nowrap;
 }
 
+.parameter-table > tbody .parameter-table-name-cell {
+  font-weight: 400;
+}
+
 .parameter-value-cell,
 .parameter-table-value-cell,
 .parameter-unit-cell,
 .parameter-table-unit-cell {
   min-width: 0;
-  padding: 2px;
+  padding: 1px 3px;
 }
 
 .parameter-unit-cell,
@@ -561,30 +599,44 @@ textarea {
   width: 100%;
   min-width: 0;
   max-width: 100%;
-  height: 30px;
+  height: 28px;
+  box-sizing: border-box;
   margin: 0;
   padding: 0 6px;
-  border: 1px solid #d5dde6;
-  border-radius: 2px;
+  border: 1px solid transparent;
+  border-radius: 1px;
   outline: 0;
   color: #1f2933;
-  background: #ffffff;
-  font-size: 11px;
+  background: transparent;
+  font-size: 12px;
+  font-variant-numeric: tabular-nums;
 }
 
 .parameter-table-cell select {
   padding-right: 4px;
 }
 
+.parameter-table > tbody .parameter-table-value-cell,
+.parameter-table > tbody .parameter-table-value-cell input,
+.parameter-table > tbody .parameter-table-value-cell select {
+  text-align: right;
+}
+
+.parameter-table > tbody .parameter-table-value-cell select {
+  text-align-last: right;
+}
+
 .parameter-table-cell input:hover:not(:disabled),
 .parameter-table-cell select:hover:not(:disabled) {
-  border-color: #aebdcb;
+  border-color: #aebbc7;
+  background: rgba(255, 255, 255, 0.72);
 }
 
 .parameter-table-cell input:focus,
 .parameter-table-cell select:focus {
   border-color: #1d6fb8;
   outline: 0;
+  background: #ffffff;
   box-shadow: inset 0 0 0 1px #1d6fb8;
 }
 
@@ -597,24 +649,27 @@ textarea {
 .parameter-table-row.read-only .parameter-value-cell,
 .parameter-table-row.read-only .parameter-table-value-cell,
 .parameter-table-cell input:read-only {
-  background: #f4f6f8;
+  background: transparent;
 }
 
 .parameter-read-only-value,
 .parameter-table-read-only-value {
   display: flex;
   align-items: center;
+  justify-content: flex-end;
   width: 100%;
   min-width: 0;
-  height: 30px;
-  padding: 0 7px;
+  height: 28px;
+  box-sizing: border-box;
+  padding: 0 6px;
   overflow: hidden;
-  border: 1px solid #d5dde6;
-  border-radius: 2px;
+  border: 0;
+  border-radius: 0;
   color: #526172;
+  text-align: right;
   text-overflow: ellipsis;
   white-space: nowrap;
-  background: #f4f6f8;
+  background: transparent;
   font-variant-numeric: tabular-nums;
 }
 
@@ -628,7 +683,10 @@ textarea {
   content: "—";
 }
 
-.parameter-table-row.invalid > .parameter-table-cell {
+.parameter-table
+  > tbody
+  > .parameter-table-row.invalid
+  > .parameter-table-cell {
   background: #fff8f7;
 }
 
diff --git a/frontend/tests/e2e/fixtures.ts b/frontend/tests/e2e/fixtures.ts
index 52e11a8..2eb5d2e 100644
--- a/frontend/tests/e2e/fixtures.ts
+++ b/frontend/tests/e2e/fixtures.ts
@@ -146,6 +146,16 @@ export const componentCatalog = {
               minimumExclusive: true,
               description: "用于验证参数表单位换算和 XML 基础单位输出的参考压力。",
             },
+            {
+              name: "reference_temperature",
+              label: "参考温度",
+              quantity: "temperature",
+              unit: "K",
+              default: 300,
+              minimum: 0,
+              minimumExclusive: false,
+              description: "用于验证带偏移量单位的数值换算和显示精度。",
+            },
           ],
         },
         {
diff --git a/frontend/tests/e2e/parameter-table.spec.ts b/frontend/tests/e2e/parameter-table.spec.ts
index a9af781..519667a 100644
--- a/frontend/tests/e2e/parameter-table.spec.ts
+++ b/frontend/tests/e2e/parameter-table.spec.ts
@@ -41,6 +41,7 @@ test("组件参数和仿真设置使用共享的三列表格", async ({ page })
     "节点 ID",
     "介质物性索引",
     "参考压力",
+    "参考温度",
   ]);
   await expect(simulationTable.getByRole("rowheader")).toHaveText([
     "起始时间",
@@ -64,6 +65,173 @@ test("组件参数和仿真设置使用共享的三列表格", async ({ page })
     .locator("thead .parameter-table-name-cell")
     .evaluate((element) => element.getBoundingClientRect().width);
   expect(Math.abs(componentNameWidth - simulationNameWidth)).toBeLessThanOrEqual(1);
+
+  const panelTitleHeights = await page
+    .locator(".properties .panel-title")
+    .evaluateAll((elements) =>
+      elements.map((element) => element.getBoundingClientRect().height),
+    );
+  expect(panelTitleHeights).toHaveLength(2);
+  panelTitleHeights.forEach((height) => expect(height).toBeLessThanOrEqual(32));
+
+  const compactTableMetrics = await page
+    .locator(".properties .parameter-table")
+    .evaluateAll((tables) =>
+      tables.map((table) => {
+        const content = table.closest<HTMLElement>(".properties-subpane-content");
+        const headerCell = table.querySelector<HTMLElement>("thead th");
+        const bodyRows = Array.from(
+          table.querySelectorAll<HTMLElement>("tbody .parameter-table-row"),
+        );
+        const control = table.querySelector<HTMLElement>("input, select");
+        if (!content || !headerCell || !control) {
+          throw new Error("参数表缺少布局测量所需的元素");
+        }
+        const tableBounds = table.getBoundingClientRect();
+        const contentBounds = content.getBoundingClientRect();
+        const tableStyle = getComputedStyle(table);
+        const contentLeft = contentBounds.left + content.clientLeft;
+        const contentRight = contentLeft + content.clientWidth;
+        const controlBounds = control.getBoundingClientRect();
+        const controlCell = control.closest<HTMLElement>("td");
+        if (!controlCell) {
+          throw new Error("参数控件不在数据单元格中");
+        }
+        const controlCellBounds = controlCell.getBoundingClientRect();
+        return {
+          leftInset: tableBounds.left - contentLeft,
+          rightInset: contentRight - tableBounds.right,
+          borderRadius: tableStyle.borderRadius,
+          borderTopWidth: tableStyle.borderTopWidth,
+          headerHeight: headerCell.getBoundingClientRect().height,
+          headerPosition: getComputedStyle(headerCell).position,
+          maximumRowHeight: Math.max(
+            ...bodyRows.map((row) => row.getBoundingClientRect().height),
+          ),
+          controlHeight: controlBounds.height,
+          controlContained:
+            controlBounds.left >= controlCellBounds.left - 0.5 &&
+            controlBounds.right <= controlCellBounds.right + 0.5 &&
+            controlBounds.top >= controlCellBounds.top - 0.5 &&
+            controlBounds.bottom <= controlCellBounds.bottom + 0.5,
+        };
+      }),
+    );
+  expect(compactTableMetrics).toHaveLength(2);
+  compactTableMetrics.forEach((metrics) => {
+    expect(Math.abs(metrics.leftInset)).toBeLessThanOrEqual(1);
+    expect(Math.abs(metrics.rightInset)).toBeLessThanOrEqual(1);
+    expect(metrics.borderRadius).toBe("0px");
+    expect(metrics.borderTopWidth).toBe("0px");
+    expect(metrics.headerHeight).toBeLessThanOrEqual(28);
+    expect(metrics.headerPosition).toBe("sticky");
+    expect(metrics.maximumRowHeight).toBeLessThanOrEqual(32);
+    expect(metrics.controlHeight).toBeGreaterThanOrEqual(22);
+    expect(metrics.controlHeight).toBeLessThanOrEqual(28);
+    expect(metrics.controlContained).toBe(true);
+  });
+  await expect(
+    componentTable.getByRole("rowheader", {
+      name: "组件名称",
+      exact: true,
+    }),
+  ).toHaveCSS("text-align", "left");
+  await expect(page.getByLabel("参考压力", { exact: true })).toHaveCSS(
+    "text-align",
+    "right",
+  );
+  const valueColumnAlignment = await page
+    .locator(".properties .parameter-table tbody .parameter-table-value-cell")
+    .evaluateAll((cells) =>
+      cells.every((cell) => {
+        const controls = Array.from(
+          cell.querySelectorAll<HTMLElement>("input, select"),
+        );
+        return (
+          getComputedStyle(cell).textAlign === "right" &&
+          controls.every(
+            (control) => getComputedStyle(control).textAlign === "right",
+          )
+        );
+      }),
+    );
+  expect(valueColumnAlignment).toBe(true);
+  await expect(
+    componentTable.locator(".parameter-table-read-only-value").first(),
+  ).toHaveCSS("justify-content", "flex-end");
+  await expect(page.getByLabel("介质物性索引", { exact: true })).toHaveCSS(
+    "text-align-last",
+    "right",
+  );
+  const solver = page.getByLabel("求解器", { exact: true });
+  await expect(solver).toHaveCSS("text-align", "right");
+  await expect(solver).toHaveCSS("text-align-last", "right");
+  await solver.selectOption("Radau");
+  await expect(solver).toHaveValue("Radau");
+});
+
+test("最窄参数面板滚动时表头固定且值列保持可用宽度", async ({ page }) => {
+  await page.goto("/");
+  await addPneumaticTestComponent(page);
+
+  const widthSeparator = page.getByRole("separator", {
+    name: "调整参数面板宽度",
+    exact: true,
+  });
+  await widthSeparator.focus();
+  await page.keyboard.press("ArrowRight");
+  await page.keyboard.press("ArrowRight");
+  await page.keyboard.press("ArrowRight");
+  await expect(widthSeparator).toHaveAttribute("aria-valuenow", "280");
+
+  const heightSeparator = page.getByRole("separator", {
+    name: "调整组件参数和仿真设置区域高度",
+    exact: true,
+  });
+  await heightSeparator.focus();
+  for (let step = 0; step < 11; step += 1) {
+    await page.keyboard.press("ArrowUp");
+  }
+  await expect(heightSeparator).toHaveAttribute("aria-valuenow", "120");
+
+  const componentContent = page
+    .getByRole("region", { name: "组件参数子栏", exact: true })
+    .locator(".properties-subpane-content");
+  await expect
+    .poll(() =>
+      componentContent.evaluate(
+        (element) => element.scrollHeight - element.clientHeight,
+      ),
+    )
+    .toBeGreaterThan(0);
+  await componentContent.evaluate((element) => {
+    element.scrollTop = 48;
+  });
+  await expect
+    .poll(() => componentContent.evaluate((element) => element.scrollTop))
+    .toBeGreaterThan(0);
+
+  const narrowLayout = await componentContent.evaluate((content) => {
+    const header = content.querySelector<HTMLElement>(
+      "thead .parameter-table-name-cell",
+    );
+    const valueHeader = content.querySelector<HTMLElement>(
+      "thead .parameter-table-value-cell",
+    );
+    const wrap = content.querySelector<HTMLElement>(".parameter-table-wrap");
+    if (!header || !valueHeader || !wrap) {
+      throw new Error("无法测量最窄参数表布局");
+    }
+    return {
+      stickyTopDelta:
+        header.getBoundingClientRect().top - content.getBoundingClientRect().top,
+      valueWidth: valueHeader.getBoundingClientRect().width,
+      horizontalOverflow: wrap.scrollWidth - wrap.clientWidth,
+    };
+  });
+  expect(Math.abs(narrowLayout.stickyTopDelta)).toBeLessThanOrEqual(1);
+  expect(narrowLayout.valueWidth).toBeGreaterThanOrEqual(95);
+  expect(narrowLayout.horizontalOverflow).toBeLessThanOrEqual(1);
 });
 
 test("参数说明延迟显示，单位切换不改变 XML 基础值", async ({ page }) => {
@@ -140,6 +308,63 @@ test("参数说明延迟显示，单位切换不改变 XML 基础值", async ({
   );
 });
 
+test("科学计数法在提交、单位换算和工程加载后保持", async ({ page }) => {
+  await page.goto("/");
+  await addPneumaticTestComponent(page);
+
+  const pressureInput = page.getByLabel("参考压力", { exact: true });
+  const pressureUnit = page.getByLabel("参考压力单位", { exact: true });
+
+  await pressureInput.fill("1e-5");
+  await pressureInput.press("Enter");
+  await pressureUnit.selectOption("kPa");
+  await expect(pressureInput).toHaveValue("1e-8");
+  await pressureUnit.selectOption("Pa");
+  await expect(pressureInput).toHaveValue("1e-5");
+
+  await pressureUnit.selectOption("kPa");
+  await pressureInput.fill("1.234567890123E+3");
+  await pressureInput.press("Enter");
+  await pressureUnit.selectOption("Pa");
+  await expect(pressureInput).toHaveValue("1.234567890123E+6");
+  await pressureUnit.selectOption("kPa");
+  await expect(pressureInput).toHaveValue("1.234567890123E+3");
+
+  await pressureInput.fill("1.20E+3");
+  await pressureInput.press("Enter");
+  await pressureUnit.selectOption("Pa");
+  await expect(pressureInput).toHaveValue("1.20E+6");
+  await pressureUnit.selectOption("kPa");
+  await expect(pressureInput).toHaveValue("1.20E+3");
+
+  const temperatureInput = page.getByLabel("参考温度", { exact: true });
+  const temperatureUnit = page.getByLabel("参考温度单位", { exact: true });
+  await temperatureUnit.selectOption("degC");
+  await temperatureInput.fill("1e-10");
+  await temperatureInput.press("Enter");
+  await temperatureUnit.selectOption("K");
+  await expect(temperatureInput).toHaveValue("2.731500000001e2");
+  await temperatureUnit.selectOption("degC");
+  await expect(temperatureInput).toHaveValue("1e-10");
+
+  await page.getByRole("button", { name: "保存工程", exact: true }).click();
+  await pressureInput.fill("2");
+  await pressureInput.press("Enter");
+  await page.getByRole("button", { name: "加载工程", exact: true }).click();
+  await page
+    .locator('.flow-canvas .react-flow__node[data-id="amesim_pneumatic_test_1"]')
+    .click();
+  await expect(pressureUnit).toHaveValue("kPa");
+  await expect(pressureInput).toHaveValue("1.20E+3");
+  await expect(temperatureUnit).toHaveValue("degC");
+  await expect(temperatureInput).toHaveValue("1e-10");
+
+  await page.getByRole("button", { name: "生成系统 XML", exact: true }).click();
+  await expect(page.getByLabel("生成的系统 XML")).toContainText(
+    '<Parameter name="reference_pressure" value="1200000"',
+  );
+});
+
 test("参数表列宽可调整并在刷新后保留", async ({ page }) => {
   await page.goto("/");
 
@@ -388,3 +613,28 @@ test("仿真数值设置同样保留公式，并在执行协议中使用计算
   await expect(xmlBlock).toContainText('tStop="7"');
   await expect(xmlBlock).not.toContainText(expression);
 });
+
+test("仿真数值设置中的科学计数法在保存加载后保持", async ({ page }) => {
+  await page.goto("/");
+
+  const stepInput = page.getByLabel("采样步长", { exact: true });
+  const maxStepInput = page.getByLabel("最大积分步长", { exact: true });
+  await stepInput.fill("1e-5");
+  await stepInput.press("Enter");
+  await maxStepInput.fill("1.20E-4");
+  await maxStepInput.press("Enter");
+
+  await page.getByRole("button", { name: "保存工程", exact: true }).click();
+  await stepInput.fill("0.1");
+  await stepInput.press("Enter");
+  await maxStepInput.fill("0.01");
+  await maxStepInput.press("Enter");
+  await page.getByRole("button", { name: "加载工程", exact: true }).click();
+
+  await expect(stepInput).toHaveValue("1e-5");
+  await expect(maxStepInput).toHaveValue("1.20E-4");
+  await page.getByRole("button", { name: "生成系统 XML", exact: true }).click();
+  const xmlBlock = page.getByLabel("生成的系统 XML");
+  await expect(xmlBlock).toContainText('step="0.00001"');
+  await expect(xmlBlock).toContainText('maxStep="0.00012"');
+});