短语词组短语wool scouring waste water 洗毛污水wool -scouring water 洗毛污水bf gas scouring water 高炉煤气洗涤水gas scouring water 煤气洗涤水high strength scouring water 高浓度洗毛废水maximum scouring water depth 最大冲刷水深water scouring 水流冲刷 返回 scouring water