行星齿轮一槽轮机构 planetary gear train-geneva wheel
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正齿行星轮分插机构 transplanting mechanism with planetary spur gears
行星齿轮传动机构 [机] Planetary gear drive mechanism
行星齿轮变速机构 planetary gear transmission mechanism
摆线针轮行星机构 planetary mechanism of cycloid pinwheel
行星齿轮式车轮机构 Planetary gear wheel mechanism
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