优化压力流量求解并达到四路性能门槛

tests/test_amesim_mechanical_xml.py

@@ -423,6 +423,8 @@ class AmesimMechanicalXmlTests(unittest.TestCase):
         result = run_system_xml_simulation(xml)
 
         self.assertTrue(result["success"], result["message"])
+        self.assertNotIn("node_1.port_4.x", result["series"])
+        self.assertNotIn("node_1.port_21.f", result["series"])
         self.assertAlmostEqual(result["series"]["mass_1.a"][0], 5.0)
 
     def test_elastic_contact_project_compiles_and_simulates(self) -> None: