heading blasting 中文意思是什麼
heading blasting
解釋
0室爆破-
Adopting the rhombus cut and the mid - deep - hole smooth blasting technology to realize fast heading in rock drift
採用直眼菱形掏糟中深孔爆破技術實現巖巷快速掘進 -
The application of millisecond blasting technique in heading advance
微差爆破技術在巷道掘進中的應用 -
Theoretical discussion and practices to improve blasting and heading efficient rate in mine deep rock roadway
提高深部巖石巷道爆破掘進效率的理論探討與實踐
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