基本解释[機械工程]地表排水渠英汉例句雙語例句In this case, the water table is not flow surface and there is no"seepage surface" on the side walls of drainage river channel.該條件下的潛水位麪不是流麪，在排水河渠邊壁也不存在所謂的“滲出麪”。surface drainage channel更多例句词组短语短語drainage surface channel 排水明渠surface drainage channel更多词组专业释义機械工程地表排水渠