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.
互联网
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