短語(yǔ)詞組短語(yǔ)open excavation order method 明挖順作法shallow excavation CRD method 淺埋暗挖CRD法no -excavation construction method 非開挖施工技術(shù)cover -excavation reverse method 蓋挖逆作法crd excavation method crd 工法Arched heading excavation method 弧形導(dǎo)洞法diversion excavation method 導(dǎo)流開挖法coal excavation method 採(cǎi)煤法shallow burried excavation method 淺埋暗挖施工 返回 excavation method