... 煤的低位发热量 low calorific value of coal 煤的分类法 classification of coal 煤的高位发热量 high heat output of coal ...
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industrial classification of coal 煤工业分类
Classification of coal mine water 煤矿矿井水分类
classification of coal mining roof [矿业] 煤矿顶板分级
classification of coal gas 煤气分类
Grain size classification of coal 煤炭粒度分级
size classification of coal 煤分级
parr's classification of coal 帕尔煤炭分类法
granular classification of coal 煤炭粒度分级
ralston's classification of coal 罗尔斯顿煤分类法
In the paper the evaluation index system of factors influencing the value of coal resources assets is set up, and fuzzy models for the classification of coal resources assets are given.
建立了煤炭资源产分类的影响因素评价指标体系，以及基于聚类的综合评判模糊分类模型，探讨了煤炭资源资产分类的模糊数学方法，并通过实例进行了检验。
Macroscopic classification for bituminous coal is one of the research tasks for coal petrology.
烟煤的宏观煤岩分类是煤岩学研究的内容之一。
According to the number of practical data coming from drills and mines, the author puts forward classification of broken coal.
本文以陕西韩城矿区北区钻孔和井下大量的实际观测资料为依据，提出了破坏煤分类的方案。
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