Various references have showed that satisfied technology series have not been created although there have been a number of research methods of hydrocarbon accumulation coefficient.
国内外大量调研资料表明，研究油气聚集系数的方法虽然有多种，但是尚没有形成令人满意的技术系列。
The coefficient of hydrocarbon accumulation is the key parameter for hydrocarbon resource evaluation.
聚集系数是油气资源评价中最为关键的一个参数。
At same time, the leaf area coefficient, dry matter accumulation and economic coefficient of compact type corn variety is bigger than loosely type corn variety.
在最高产量时，紧凑型玉米品种与松散型玉米品种相比具有叶面积系数大，干物质积累数量大，经济系数高等特点。
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