geoglogy condition of coal layer
...经元网络 煤层开采地质条件 开采工艺性 评价 [gap=993]Keywords artificial neural network; geoglogy condition of coal layer; mining technology; judgement ...
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coal mining geological conditions
... MINING GEOLOGICAL CONDITIONS 采矿地质条件 coal mining geological conditions 煤层开采地质条件 Mining Technology Conditions 开采技术条件 ...
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