How to raise blasting efficiency,improve blasting effect,increase drifting footage and ensure forming is a main problem that shoulel be resolved in the blasting working of stone drifting.The technology problems of blasthole depth,cutting blasting,smooth wall blasting,and directional blasting is discussed.
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(2025-6-4)
菜菜菜
cdercder
GingerF
Nole
Criminology34
馨馨的科科
无极微光
潇洒的惋清
平淡的梦菲
乐空思
heekkll
活雷锋
你嵙这个期刊没买
cherry
伶俐书芹
初景
XX
mafukairi
怡然的凌兰
文静的含蕾
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