短语词组短语concrete e spraying 混凝土喷洒pumping concrete spraying machine 泵式混凝土湿喷机concrete spraying support [矿业]喷射混凝土支护Rotor concrete spraying machine 转子式混凝土喷射机concrete spraying robot 喷浆机器人的spraying concrete 喷射混凝土 返回 concrete spraying