These are useful in hard rock mining where high brisance, high shattering effects, are desired.
种,对需要高威、高破碎效应的坚硬岩石矿,是有用的。
These are useful in hard rock mining where high brisance, high shattering effects, are desired.
种,对需要高威、高破碎效应的坚硬岩石矿,是有用的。
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