用药量和炮眼间距取决于岩石的范例和布局以及炮眼的直径和深度。
The quantity of explosives and the blast-hole spacing are dependent upon the type and structure of the rock and the diameter and depth of the blast holes.
用药量和炮眼间距取决于岩石的范例和布局以及炮眼的直径和深度。
The quantity of explosives and the blast-hole spacing are dependent upon the type and structure of the rock and the diameter and depth of the blast holes.
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