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Explosives and Explosive Ordnance Disposal
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技术上
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这些制约着地下煤开采水平的混杂因素以及影响整个开采过程的地质因素、技术因素和经济因素复杂关系之间的相互作用、已在上文作了详细探讨
The motley of factors that constrain the level of recovery in underground extraction of coal and the complex interplay of geologic, technologic and economic factors affection the overall recovery process have been discussed above in detail
革命性技术变革虽然能使煤炭开采率逐渐上升、意义重大、但距今尚有一段距离
R-technologic reforms, which can bring about profound, step-junction increases in coal recovery, are still way off
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