drainage (n.) drainage n.排水；排水系統(tǒng)；污水；【醫(yī)】引流（法），導液（法）drainable adj.可排水的drainability n.排水能力drain-trap n.疏水器drain-to-gate n.漏極到柵極drain-pipes 排水管道drain-pipe trousers [經(jīng)濟學]瘦褲腿褲子drain-pipe 排水管道drain-off system [環(huán)境科學技術]排放系統(tǒng)drain-cock n.排水噸位drain well 排泄井，排水井；污水井drain water 排泄水，廢水drain valve plug [交通運輸工程]放泄閥塞drain valve [鐵路] 排水閥；放泄閥drain tube inserter [醫(yī)藥科學]引流管插入器drain tube 排水管，放出管；引流管drain time 流滴時間；滴落時間drain tank 疏水槽；儲油槽drain surface 漏表面