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pulley block翻译
pulley block什么意思 pulley block音标、翻译、用法
英语翻译时间：2023/3/1 14:16:10阅读：2379
pulley block音标英 [ˈpʊli blɔk]美 [ˈpʊli blɑk]pulley block翻译n.滑轮组；英英释义 pulley block n.a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of appli