英语词汇“twofold purchase”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	twofold purchase
释义	twofold purchase Mach., Mech. a purchase using a double standing block and a double running block so as to give a mechanical advantage of four or five, neglecting friction, depending on whether the hauling is on the standing block or the running block.
随便看	slow-twitch slow-up slow virus slow wave slow-wave sleep slow-witted slowworm sloyd S.L.P. SLR slub slubber sludge sludgeworm sludging sludgy slue sluff slug slugabed slugfest sluggard sluggardly slugger slugging average

英语词典包含168451条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。