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