coal quality character的意思|示意

The paper has reviewed lithological character and spatial distribution of magmatite and its influences to the coal - bed, coal quality and mining technological conditions.

论述了昌福山井田岩浆岩岩性特征，空间分布及对煤层、煤质和开采技术条件的影响。

Using the exergy analysis method, the conception of energy quality character was presented, which indicated the discretion of electricity, gas, coal, steam and hot water, cooling or heating load etc.

基于热力学第二定律的分析方法，按照能质系数的概念确定了电、天然气、煤、蒸汽、热水等各种形式的建筑用能及建筑物耗冷量、耗热量的能源品位高低；