Ratchets
[rætʃits]
例句:
- Finger pawls, working into ratchets at the ends of the roller, serve to rotate it after each line is printed. Edward W. Byrn. 十九世纪发明进展.
- Bolts or ratchets are inserted through the rail, and clamp the cushion to the wall of the rail. 佚名. 神奇的知识之书.
- So they attached levers, pulleys, ratchets and windlasses, until at last they reached the size of the great siege cross-bows, weighing eighteen pounds. 佚名. 神奇的知识之书.
哈蒂编辑