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Most mechanical transmissions function as rotary speed changers.
大多数机械传动器的功能都作为转速变速器。
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Mechanical transmissions. Woodruff keys. Dimensions and tolerances.
机械传动。圆盘键。尺寸和公差。
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Mechanical transmissions. Couplings. Function, designation and field of use.
机械传动。联结器。功能、命名和使用范围。
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