The contact angles of formamide on the carbon fibres under n-alkane were measured by means of electrobalance and the surface free energy and its components of the fibres were obtained.
用电子天平法,以正烷烃-甲酰胺-炭纤维体系间接地求得了炭纤维的表面自由能及其分量。
The test results of 30 samples collected in 4 wells indicate that the abundance and extractable contents of organic matter in the coal measures are both high, n alkane possesses odd even predominance;
口井30 余块样品测试结果表明,煤系有机质丰度及可抽提有机质的量都较高;正构烷烃具明显奇偶优势;
The test results of 30 samples collected in 4 wells indicate that the abundance and extractable contents of organic matter in the coal measures are both high, n alkane possesses odd even predominance;
口井30 余块样品测试结果表明,煤系有机质丰度及可抽提有机质的量都较高;正构烷烃具明显奇偶优势;
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