煤素质相关论文
Organic petrology is a marginal science that is quite practicable. At present, it has developed into a routine research ......
<正> 煤的不均一性、非晶态结构以及较小的溶解能力,使得用传统的有机化学和物理化学方法进行其结构测定存在不少困难。最近,Dyrka......
