短語詞組短語reducing planet gear box 行星減速齒輪箱reducing g gear 減速器speed reducing gear train 減速齒輪系reducing gear indicator 減速齒輪示功器harmonic reducing gear box 諧波齒輪減速器motor reducing gear detail 電動機(jī)減速器main reaction reducing gear 主減速器starshaped reducing gear 星形減速器speed reducing gear 繙譯;減速傳動箱 返回 reducing gear