The paper elaborated the application of level deep-hole blasting for excavation project in city.

阐述了水平深孔爆破在城区石方开挖中的应用，并初步探讨了水平孔爆破的破岩机理。

youdao

The paper elaborated the application of level deep-hole blasting for excavation project in city.

阐述了水平深孔爆破在城区石方开挖中的应用，并初步探讨了水平孔爆破的破岩机理。

youdao