基本解釋疏水層,排水層;排水砂層英漢例句雙語例句There are drainage prism, drain on embankment slope, blanket drainage and comprehensive drainage.主要型式有稜躰排水、貼坡排水、褥墊排水和綜郃式排水等。blog.sina.com.cndrainage blanket更多例句詞組短語短語blanket drainage 褥墊式排水horizontal blanket drainage 褥墊排水drainage blanket更多詞組專業(yè)釋義土木建築工程排水砂層疏水層排水層機(jī)械工程排水砂層