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1·Blasthole logging and supervision of blasthole sampling.

记录炮眼数据，并监督炮眼采样工作。

2·The technology problems of blasthole depth, cutting blasting, smooth wall blasting, and directional blasting is discussed.

文章对炮眼深度、掏槽爆破、光面爆破、定向爆破等技术问题进行了探讨。

炮眼

1·The technology problems of blasthole depth, cutting blasting, smooth wall blasting, and directional blasting is discussed.

文章对炮眼深度、掏槽爆破、光面爆破、定向爆破等技术问题进行了探讨。