1. Pawl is a simple device which allows a shaft to turn only one way. 掣爪是一种非常简单的只让转轴往一个方向转动的装置。
2. The application of die plate in shaft equipment installation is introduced. 介绍了模具盘在井筒装备安装中的具体应用。
3. The sleeve also rises up the shaft, and when it rises beyond a certain point, it operates a throttle valve lever, and so reduces the flow of steam. 套筒也随之顺轴上升。而当套筒升过一定的点时，套筒就会带动一个节流阀的阀杆进入工作，这样就能减少蒸汽的流量。
英英解释
n.
1. a line that forms the length of an arrow pointer
2. an aggressive remark directed at a person like a missile and intended to have a telling effect
3. a long rod or pole (especially the handle of an implement or the body of a weapon like a spear or ar
4. a column of light (as from a beacon)
5. the main (mid) section of a long bone
6. obscene terms for penis
7. a long pointed rod used as a weapon
8. a vertical passageway through a building (as for an elevator)
9. (architecture) upright consisting of the vertical part of a column
10. a vertical passage into a mine
11. a revolving rod that transmits power or motion
12. the hollow spine of a feather v.
1. equip with a shaft
2. defeat someone in an expectation through trickery or deceit
