短语词组短语pull the box 发火灾警报命令pull -in box 引入箱Pull down List Box 下拉式列表框;下推式列表框push button or pull box 按钮或分线盒a push -pull box pump 推挽式箱型泵box pull 拉线盒axle -box pull rod 轴箱拉杆double axle -box pull-rod 双轴箱拉杆 返回 pull box