垂直(制动)销

normal pin的用法和样例:

例句

  1. A piston pin fits into a round hole in the piston.活塞销装在活塞的环形的孔里。
  2. Examine carefully the crank pin for flaws or hair cracks.精心检查曲柄销颈有无缺陷或微小裂纹。

在今天我们要讲的两个习惯用语里,一个关键的字就是:pin。Pin这个字单独用的时候可以解释为:别针。但是,pin这个字也有不少和其他字合在一起用的时

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bank robber
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