物理损坏 meaning in English

physical deterioration

The ring joint is self - aligning ; the gasket maybe reused unless it is physically damaged
这种环连接可自行调整对准；除非出现物理损坏，否则垫圈可以重复使用。
Among them , the damage due to physical results from formation stress and external force exerted on casing ; chemical damage from corrosion is in the process of casing " s idle and use , and human factor involves incorrect design , manufacturing and operation
其中，套管的物理损坏包括地层力对套管的破坏和施加外力对套管的损坏；套管的化学损坏包括套管闲置被锈蚀和套管使用过程中被腐蚀；套管的人为破坏因素包括设计不当、制造不当和施工不当。