The demolition of open ore-bunker pillars by hydraulic pressure blasting is introduced in detail.

利用水压爆破技术特点，在人防工程、阵地工程隧道掘进中进行水压爆破。

youdao

The demolition of open ore-bunker pillars by hydraulic pressure blasting is introduced in detail.

利用水压爆破技术特点，在人防工程、阵地工程隧道掘进中进行水压爆破。

youdao