weathered coal 中文意思是什麼
weathered coal
解釋
風化煤-
Based on testing data in worksite and engineering practice, the strata damage movement characteristics, rock properties of weathered zone and qualitative and quantitative analysis of the mechanism of coal layer safety extraction in efflorescent oxygenized belts were discussed
摘要根據現場觀測和工程實踐，論述了風氧化帶內煤層開采時，覆巖破壞移動特徵，風化帶巖石屬性和風氧化帶內煤層安全開采機理的定性、定量分析。 -
Study on the weathered damage attributes of rock and the law of reduction for coal column protection
巖石的風化損傷屬性與縮小防護煤柱開采機制研究 -
The humic acid which depolymerized from huainan weathered coal with catalysts was prepared, and the influence of yield and structure of the humic acid which was prepared with different catalysts were investigated
摘要以淮南風化煤為對象，硝酸催化氧解制備腐植酸，考察不同載體的催化劑對風化煤氧解制備腐植酸收率和結構組成的影響。
分享友人