retreatn.撤退;改变;隐居处v.撤退;改变;退避;缩回象棋的棋子
retreated tire换轮胎
retreat period撤退期
retreating chin向后削的下巴
retreating work后退式开采
retreat in haste仓皇退却
retreatment mill再磨机
Retreating entry回采巷道
retreatment cell浮选精选机, 浮游精选机
retreating system后退式开采法
retreating relief退出式救济