该区域的煤含硫量低，也因此更为清洁，但是在处理前能值(energy density)相对较低。
Coal from this region is low in sulphur, and so burns more cleanly, but has a relatively low energy density unless treated.
煤地质学一直偏重于对煤和含煤地层的地层学和沉积学的研究。
Coal geology emphatically studies always stratigraphy and sedimentology of coal and coal-bearing strata.
只有加强洁净煤技术的研究降低商品煤的含硫量， 才能从根本上减轻煤中硫对电力生产的不利影响。
Decreasing sulfur content of coal through to strengthen clean coal technology research and development that is the basic route for decreasing the influence.
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