短语词组短語fork of belt shifter 皮帶叉belt shifter ring 移帶器彈簧belt shifter cam 皮帶移動裝置凸輪belt shifter screw 移帶器螺絲belt shifter spring 移帶器彈簧belt shifter lock 皮帶轉動鎖死裝置belt shifter fork 皮帶移動叉 返回 belt shifter