| 单词 | dumb sheave |
| 释义 | > as lemmasdumb sheave dumb sheave n. a sheaveless block having a hole for a rope to be reeved through. ΚΠ c1860 H. Stuart Novices or Young Seaman's Catech. (rev. ed.) 74 There is a live sheave for the working top pendant, and a dumb one for the hawser. 1882 G. S. Nares Seamanship (ed. 6) 32 It is rove over a dumb sheave in the flying jib-boom end. < as lemmas |
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