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Mechanical Powers
The lever, inclined plane, wheel and axle, screw, pulley, and wedge, the elementary contrivances of which all machines are composed.
- 词性： noun
- 行业/领域： 语言
- 类别 Encyclopedias
- Organization: Project Gutenberg
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创建者
- JohannesDD
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(V.I.P) 14638 分数 - 100% positive feedback
(Sydney, Australia)
