| 单词 | pulley-block |
| 释义 | pulley-block (once / 1477414 pages) n WORD FAMILY pulley-block USAGE EXAMPLESWhat if the rope carried away or the pulley-block was defective? Westerman, Percy F. (Percy Francis), With Beatty off Jutland—A Romance o...(2012) Snatch′-block, a kind of pulley-block, having an opening in the side to receive the bight of a rope; Snatch′er, one who snatches.—adv. Various, Chambers's Twentieth Century Dictio...(2012) Pull′ey-block, a shell containing one or more sheaves, the whole forming a pulley; Pull′ey-shell, the casing of a pulley-block. Various, Chambers's Twentieth Century Dictio...(2012) n a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope Syn|Hypo|Hyper block, pulley, pulley block bollock, bullock block a pulley-block at the head of a topmast fairleada pulley-block used to guide a rope forming part of a ship's rigging to avoid chafing idle pulley, idle wheel, idler pulleya pulley on a shaft that presses against a guide belt to guide or tighten it snatch blocka pulley-block that can be opened to receive the bight of a rope machine, simple machine a device for overcoming resistance at one point by applying force at some other point |
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