英语词汇“first-class lever”的翻译、意思、用法、释义-英汉汉英词典

单词	first-class lever
释义	first-class lever 【工程】第一类杠杆以上来源于：《21世纪大英汉词典》 first-class lever第一种杠杆first-class lever第一種槓桿機械工程
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