机械效率 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "机械效率" in Chinese language version.

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archive.org

Oxford English Dictionary. Oxford University Press. 1989. A wheel with a groove round its rim, a sheave. A wheel or drum fixed on a shaft and turned by a belt, cable, etc.,
Anderson, William Ballantyne. Physics for Technical Students: Mechanics and Heat. New York, USA: McGraw Hill. 1914: 112–122 [2008-05-11].