短語詞組短語speed d reduction gear 齒輪減速器speed d reduction gear box 齒輪減速箱speed reduction gear box 齒輪減速箱helical speed reduction gear 斜齒輪減速機helicing speed reduction gear 斜齒輪加速機medium -speed engines with reduction gear 減速機付中速機関low -speed engines with reduction gear 減速機付低速機関helical gear speed reduction 斜齒輪減速器cylindrical helical gear speed reduction 圓柱斜齒輪減速器 返回 speed reduction gear