| 1. | Hard coal - determination of moisture - holding capacity
无烟煤.最大保水能力测定
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| 2. | Preparation of hard coal ; preparation plants ; flowsheets
选煤.选煤设备.工艺流程图
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| 3. | Preparation of hard coal ; preparation plants ; process control
选煤.选煤厂.过程控制
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| 4. | Hard coal lignite , overburden , limestone , ash slag
烟煤褐煤剥离物石灰石灰渣矿渣
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| 5. | Mine plans - petrography - part 5 : hard coal mining
矿山平面图.岩相学.第5部分:煤矿
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| 6. | Hard coal - froth flotation testing - release evaluation
硬煤.泡沫浮选试验.释放评价
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| 7. | Soft coal burns with more flames than hard coal
烟煤燃烧时火焰较无烟煤多。
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| 8. | Preparation of hard coal ; preparation plants ; equipment monitoring
选煤.选煤厂.设备监控
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| 9. | Preparation of hard coal ; terms relating to processes
选煤.工艺流程术语
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| 10. | Preparation of hard coal - preparation plants - part 1 : planning
选煤.选煤设备.第1部分:计划
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