It consists of a base and two ring type devices which can be worn onto the finger pad which is the most sensitive part of the finger.

它由一个基座和两个环状设备组成，可以套在指垫上，而指垫是手指上最敏感的部位。

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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。

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Carried through kinematic analysis for napping the CMP process of ring polishing machine, and presented pace vector and track equation about one point relative to examination piece on polishing pad.

对修正环形抛光机CMP过程进行运动分析，给出研磨盘上一点相对于工件的速度矢量与轨迹方程。

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In the case of the Challenger, the culprit was a simple O-ring that had become too brittle to do its job after a freezing night waiting on the launch pad.

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