英语词汇“left-hand screw thread”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	left-hand screw thread
释义	left-hand screw thread noun : a screw thread whose helix moves upward when the screw is inserted vertically from above in a fixed mating thread and turned clockwise
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