短语词组短语fork of belt shifter 皮带叉belt shifter ring 移带器弹簧belt shifter cam 皮带移动装置凸轮belt shifter screw 移带器螺丝belt shifter spring 移带器弹簧belt shifter lock 皮带转动锁死装置belt shifter fork 皮带移动叉 返回 belt shifter