短語詞組短語inverted impulse siphon 反向虹吸inverted d siphon 倒置虹吸管;潛管inverted -siphon with drop shaft 豎井式倒虹吸管inverted siphon projects 倒虹吸工程Inverted Siphon chamber 倒虹吸閘室irrigation n inverted siphon 地下渠道Tianshan inverted siphon 田山倒虹吸inverted siphon torsion slop 倒虹吸扭坡 返回 inverted siphon