The cleaner production is a necessary choice of the coal chemistry enterprise.

清洁生产是煤化工企业发展壮大的必然选择.

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Guo Chongtao . Coal Chemistry [ M ]. Beijing: Chemical Industry Publishing House, 1994 ( in Chinese ) .

郭崇涛. 煤化学 [ M ]. 北京: 化学工业出版社, 1994.

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The applications of NMR techniques to the study of coal chemistry were reviewed in the paper.

本文介绍了不同核磁共振方法和技术在煤化学研究中的应用.

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