sprag

英[spræg]
美[spræg]

基本释义

n.
制轮木; 煤面防护柱; 制轮杆

实用例句

Roller bearing clutch is a new kind of frictional sprag clutch.

滚柱轴承离合器是一种新型的摩擦式超越离合器.

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英英释义

Noun
  • 1. a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline

  • 2. a wooden prop used to support the roof of a mine