block and tackle 英[blɔk ænd ˈtækl] 美[blɑk ənd ˈtækəl] 释义 n. 滑轮,滑车设备 实用场景例句 全部 滑轮 Block and tackle: Combination of pulleys with rope or cable, commonly used to augment pulling force.
英汉 英英 网络释义 block-and-tackle n. 1. 滑轮组;滑车组a piece of equipment for lifting heavy objects, which works by a system of ropes and pulleys (= small wheels around which the ropes are stretched) 释义: 全部,复滑车,滑车组
block and tackle Half the pull (p) is required to lift the weight (w) with a two-pulley block and tackle unit. block and tackle n. An apparatus of pulley blocks and ropes or cables used for hauling and hoisting heavy objects.
A block and tackle is a ___ of pulley blocks and ropes used for pulling or hoisting large objects. A. mechanical set special B. set special mechanical C. special mechanical set D. special set mechanical 相关知识点: 试题来源: 解析 C 答案:C 分析:固定搭配:a set of.;形容词修饰名词。
Block and tackle, combination of a flexible rope, or cable, and pulleys commonly used to augment pulling force; it can be used to lift heavy weights or to exert large forces in any direction. In the Figure there are four freely rotating pulleys, two on t
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A block and tackle is a___ of pulley blocks and ropes used for pulling or hoisting large objects. Amechanical set special Bset special mechanical Cspecial mechanical set Dspecial set mechanical 温馨提示:审好题,想清楚,理明晰,再下笔! 正确...
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e.One of a set of small wooden or plastic pieces, such as a cube, bar, or cylinder, used as a building toy. f.PrintingA large amount of text. g.SportsA starting block. 2.A stand from which articles are displayed and sold at an auction:Many priceless antiques went on the block. ...
re·blockverb (used with object) sub·blocknoun un·blockedadjective Discover More Word History and Origins Origin ofblock1 First recorded in 1275–1325;Middle Englishblok“log, stump,” fromMiddle Frenchbloc,fromMiddle Dutchblok;perhaps akin tobalk ...