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(guó)主要(煉)焦煤礦區(qū)的儲(chǔ)量、產(chǎn)量和利用

The discussion of mechanical sampling for coking coal;

(煉)焦煤機(jī)械化采樣方法的探討