| 单词 | loose pulley |
| 释义 | > as lemmasloose pulley loose pulley n. ‘a pulley running loosely on the shaft, and receiving the belt from the fast pulley when the shaft is to be disconnected from the motor’ (E. H. Knight Pract. Dict. Mech.); also fast and loose pulley (see fast adj. Compounds 2). ΚΠ 1825 ‘J. Nicholson’ Operative Mechanic 382 A strap passing from a drum over a fast and loose pulley. 1873 J. Richards On Arrangem. Wood-working Factories 62 Loose pulleys will give trouble now and then, no matter how well they are fitted. < as lemmas |
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