短語(yǔ)詞組短語(yǔ)rock and earth excavation 土石方開(kāi)挖earth and rock excavation 土石料開(kāi)采frozen earth excavation 凍土挖掘mechanized earth excavation 機(jī)械化挖土earth excavation technique 挖土技術(shù)volume of earth excavation 土方體積earth -rock excavation 土石方開(kāi)挖earth and rock excavation machinery 土石方開(kāi)挖機(jī)械earth excavation outside the caisson 井外挖土 返回 earth excavation