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单词
simple machine
释义
simple machine
noun
:
any of various elementary mechanisms having the elements of which all machines are composed and including the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw
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antithyroid
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antitorque rotor
antitoxic
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antitrypsin
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更新时间:2025/3/21 9:12:17