短語詞組短語cylindrical valve ring gate 圓筒閥valve e gate 閥式澆口filling valve of gate 閘門充水閥Valve & gate 閥門及閘門valve or gate 閥門Plug Valve Gate repair 旋塞閥維修Valve gate nozzle 閥針式噴嘴Steel Valve Gate 鋼閘門sequential valve gate technology 澆口技術 返回 valve gate