Compared with the conventional presplitting methods, the shaped charge is obviously more effective in presplitting blasting and especially useful in controlling the presplitting slots.
聚能预与普通预相比,果明显提高,能有地控制预缝的扩展。
Compared with the conventional presplitting methods, the shaped charge is obviously more effective in presplitting blasting and especially useful in controlling the presplitting slots.
聚能预与普通预相比,果明显提高,能有地控制预缝的扩展。
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