The practice shows that the flow velocity of bulk ore rock at the stope drawpoint and the dimensions of drawpoint have remarkable influence on the drawing effect.
实践证明，采场放出口矿岩散体速度分布和放出口尺寸对放矿结果有显著影响。
The practice shows that the flow velocity of bulk ore rock at the stope drawpoint and the dimensions of drawpoint have remarkable influence on the drawing effect.
实践证明，采场放出口矿岩散体速度分布和放出口尺寸对放矿结果有显著影响。
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