零件的应力状况能够反映机械构件的工作状态，对它的有效检测和评估为提高产品的安全性、可靠性和稳定性提供了保障。
The working condition of mechanical components can be indicated by their stress states, whose measurement and evaluation can also improve the security, reliability and stability of the products.
使零件不致长期处于静止状态，以保证表机的运转性能。
The part is not in a static state for a long time, so as to ensure the running performance of the machine.
分析了工作状态下孔形零件内部应力分布状态；
The distribution status of inner stress of hollowed parts under operating conditions was analyzed.
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