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coal preparation
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coal preparation
Encyclopedia
理学
〔煤田普查勘探〕
释
coal preparation
选煤
利用煤与其他物质的不同物理、物理-化学性质,在选煤厂内用机械方法去除混在原煤中的杂质,把它分成不同质量、规格的产品的过程。
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informal organizational communication
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Informal Work
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Informa PLC
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informatics of Chinese materia medica
information
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information absorbing
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information acquisition of animal and plant
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