常見例句雙語例句The method is reasonable, and the classifications have a certain benefits to improve blasting efficiency.該方法分類合理，對提高爆破效率具有一定的指導意義。Regarding the low blasting efficiency in the excavation of drift in one iron deposit, the paper taken the cutting method and blasting parameters as the main influencing factors;針對某鐵礦水平巷道掘進爆破效率較低的問題，確定了掏槽方式和爆破參數(shù)是其主要影響因素。It is special important meaning that Deep - hole Blasting With Bottom Gap Charging is used to protect bottom rock from breaking, to decrease block ratio and to improve blasting efficiency.深孔爆破孔底空隙裝藥在有效地保護底板巖層免遭破壞，減少大塊率，提高爆破效率等方面均具有重要的意義。 返回 blasting efficiency