| 单词 | ratchet wheel |
| 释义 | ratchet wheel (once / 179081 pages) n WORD FAMILY ratchet wheel: ratchet wheels USAGE EXAMPLESIt failed, as the others had done, because they required ratchet wheels, pulleys, &c. Whymper, Frederick, The Sea: Its Stirring Story of Adve...(2012) The L lever carries a pawl which operates a ratchet wheel, placed on the handle end of the slide rest cross feed screw. Rose, Joshua, Modern Machine-Shop Practice, Volum...(2012) The pawl connected to the slow-acting magnet merely serves to prevent the ratchet wheel from turning back. McMeen, Samuel, Cyclopedia of Telephony and Telegra...(2010) n toothed wheel held in place by a pawl or detent and turned by a lever Hyper wheel a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines) |
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