常見例句雙語例句By analysis of difficult points in underdrainage design at excavation section, the paper briefly introduces thinkings and methods for underdrainage design at excavation section.通過對挖方段暗排設(shè)計難點的分析，簡要介紹挖方段暗排設(shè)計的思路及方法。 返回 underdrainage