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Crank Shaft, Fricton Disc, Clutch.
曲轴，摩擦片，离合器。
youdao
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Fricton reduction mechanism and technical properties of the inner tube analysed.
对内筒减阻原理及技术性能进行了分析。
youdao
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Fricton reduction mechanism and technical properties of the inner tube analysed.
对内筒减阻原理及技术性能进行了分析。
youdao