如果阀门用在高速流体(湍流)或热循环应用环境中，则螺纹阀座环应该锁焊到阀体上，避免松落。请在订购时加以指定说明。
Threaded seat rings for valves in services with high velocity turbulent flow or thermal cycling should be lock welded to the body to avoid loosening. Please specify.
当离终点仅有十几米时，我经历了通常马拉松人才能经历的“锁脚”。
Ten meters from the finish, I experienced the leg-lock usually reserved for marathoners.
结论AO - UHN肱骨交锁髓内钉加自体松质骨植骨是治疗肱骨干骨折不愈合的一种有效方法。
Conclusion AO UHN humeral intramedullary nail fixation with auto cancellous bone graft is effective for treatment of humeral diaphyseal fracture nonunion.
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