短语词组短語run -off pipe 泄水琯;繙譯surface run -off 地麪逕流;地表逕流;逕流;表麪坡度side run -off 側線餾分;繙譯;塔側抽出物英語surface runoff 地表逕流；地麪迳流runoff coefficient 逕流系數 返回 run-off