基本解釋[能源科學(xué)技術(shù)]無(wú)軌露天礦詞組短語(yǔ)短語(yǔ)trackless equipment in the pit 井下無(wú)軌設(shè)備trackless equipments in the pit 井下無(wú)軌設(shè)備trackless pit更多詞組專(zhuān)業(yè)釋義能源科學(xué)技術(shù)無(wú)軌露天礦