drilling and blasting operation 中文意思是什麼
drilling and blasting operation
解釋
打眼放炮工作-
Colloidal particles are formed in considerable amounts in hard-rock drilling and blasting operation.
在硬巖石鉆孔和爆破作業中,大量地生成膠體粒子。 -
Drilling and blasting operation
打眼放炮工作
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