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·综述与评论· 腐植酸的胶体性质………………………………1(1) 我国风化煤利用现状与展望……………………2(1) 我国在腐植酸类物质抗蒸腾作用方面的研究进展 …………………………………………………3(1)、腐植酸在石油钻井液中的应用…………………4(1) ·试验研究· 用自
· Review and commentary · The colloidal nature of humic acid .................................... 1 (1) Present situation and prospect of weathered coal utilization in our country ........................ 2 (1) Advances in studies on the anti-transpiration effects of substances .................................................... 3 (1) Humic acid application in petroleum drilling fluids ................. 1) · Experimental study · use since