短語詞組短語planetary reverse reduction gear 行星式可倒轉減速器marine planetary reduction gear 船用行星減速齒輪傳動裝置planetary reduction gear main bearing 行星減速齒輪主軸承planetary -parallel reduction gear 行星平行軸減速齒輪箱escalator with planetary reduction gear 行星齒輪敺動自動扶梯hydrostatic planetary gear reduction 液壓行星齒輪減速stage planetary gear reduction 二級行星齒輪減速器planetary gear reduction 行星齒輪減速器 返回 planetary reduction gear