planetary gearboxplanetary reduction gear
... 矿车减速器: car retarder 行星减速器: planetary gearboxplanetary reduction gear 蜗轮减速器: worm gear reducerworm reduction unitworm speed reducer ...
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planetary gearboxplanetary reduction gear
行星齿轮箱行星减速齿轮
以上为机器翻译结果，长、整句建议使用 人工翻译 。