对煤层气在煤岩中渗流机理的认识的深入程度将直接影响到对煤层气的有效开发利用。
How much we know about the storage and seepage of coal gas will determine whether we can make effective exploitation about it.
为合理利用硫酸烧渣中的铁资源，进行了煤基直接还原生产金属化团块的研究，提出了润磨造球-预热焙烧-磁选-冷固结成型的新工艺流程。
Aimed at utilization of iron resources in pyritic slag, the study on production of metallized agglomerate with pyritic slag through coal based DR process was conducted.
如何利用煤直接液化残渣对液化技术商业化应用的经济性有重要意义，是煤直接液化技术商业化应用中亟需解决的课题之一。
How to utilize the residue is a urgent one among tasks and has significant economical efficiency for Direct Coal Liquefaction is commercialized.
充分利用煤颗粒在自由落下床反应器中停留时间短的特点，直接用空气做载气，对自由落下床反应器中煤在氧化性气氛下的快速热解行为和硫的变迁进行了研究。
Considering the very short particle residence time in the free-fall reactor, air was directly used as carrier gas to study the fast pyrolysis and sulfur evolution of coal under oxidizing atmosphere.
褐煤属低热值煤，现多以直接燃烧方式，褐煤的加工利用还具有一定的局限性，还没有完全开发利用。
Brown coal is low calorific value coal. Now most of such coal is borne directly, its processing and utilization have certain limitation and hasn't been fully developed and utilized.
热等离子体裂解煤制乙炔过程为煤的直接化工利用提供了一条有前景的、清洁转化途径。
Coal pyrolysis to acetylene in thermal plasma provides a direct route to make chemicals from coal resources.
热等离子体裂解煤制乙炔过程为煤的直接化工利用提供了一条有前景的、清洁转化途径。
Coal pyrolysis to acetylene in thermal plasma provides a direct route to make chemicals from coal resources.
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