Compression: a mattress pad in the horizontal surface of the force applied vertically downward, causing the mattress by the force along the direction of surface displacement.
压缩量：在水平放置的床垫垫面上施加垂直向下的力，引起床垫表面沿受力方向的位移量。
At installation, insufficient compression of the sealing pad behind the carbon ring seal of the expander results in oil entrance to expander body and to the corresponding pipeline.
由于膨胀机碳环密封后面的密封垫片在安装时未被充分压紧，使膨胀机机体及相应管道进油。
The problems are pad setting problems. The beam pad has a compression stress for masonry. And for different materials masonry different limited values are put forward.
阐述了梁垫对砌体还起着一个压应力图形完整系数式影响系数的作用，对不同材料的砌体还提出相对应的限值要求。
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