短語詞組短語Reduction cylindrical gear units 圓柱齒輪減速器reduction n gear 減速齒輪reduction marine gear 船用減速齒輪reduction -gear housing 減速器箱reduction drive gear 減速裝置驅動齒輪reduction spur gear 減速正齒輪Single Reduction Worm Gear Motor 單段蝸輪蝸桿減速機double -reduction helical gear 二次減速螺旋齒輪 返回 reduction gear