Study on the technology of decreasing ash and sulfur in coking coal concentrate by deep-cleaning;
(煉)焦煤深度降灰脫硫的研究
Reserves,production,and utilization of main coking coal mining areas in China;
中國主要(煉)焦煤礦區的儲量、產量和利用
The discussion of mechanical sampling for coking coal;
(煉)焦煤機械化采樣方法的探討
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