This paper introduces survey of China coal quality study, standard and analytical method of coal, standard of China coal is compared with ISO and other country.
简要介绍了中国煤质研究的概况，并介绍了中国煤炭的分析方法和标准，将中国的有关标准与iso及其他国家煤的分析标准进行了比较。
Calorific value of poor quality coal can be determined by addition of benzoic acid as standard, which can enhance the sample to burn out.
测定劣质煤的发热量时，在煤样中加入标准苯甲酸，帮助样品燃烧完全。
So, it is the basic and premises for a coal mining corporation work safety to improve the region team safety quality standard...
所以，搞好区队安全质量标准化工作是煤矿企业安全生产的基础和前提。
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