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单词 jackscrew
释义 jackscrew
 /jak"skrooh'/,  n.  
 a jack for lifting consisting of a screw steadied by a threaded support and carrying a plate or other part bearing the load. Also called screw jack.
 [1760-70; JACK1 + SCREW]
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更新时间:2024/12/23 1:51:18