常見例句The cut way and hole parameters affect the drivage efficiency and cost.掏槽方式及布孔參數(shù)影響著掘進效率和成本。The improvement of the advance rate of roadway drivage is the basic guarantee for constructing highly effcient and productive mines.提高巷道掘進單進是建設(shè)高產(chǎn)高效礦井的根本保證。 返回 drivage