In this paper, the three factors by ahp, according to further refinement the weight of each factor that calculated for coal production system the influence degree of the energy consumption.

本文将这三个要素用层次剖析法停止进一步的细化，依据计算的权重得出每个要素关于煤炭消费系统能耗的影响水平。

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Established during the Eastern Zhou Dynasty in 497 B.C., Taiyuan today is a fairly nondescript, industrial city known for its steel and coal production.

公元前497年东周建立的太原，在今天，却看起来是再普通不过的以钢铁和煤矿闻名的工业城市。

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Blankenship had planned to increase Massey coal production for the coming year from 44 million tons to 56 million tons and so needed to add staff.

FORBES: Magazine Article

Separately, a government official said China would continue to rely on domestic coal production for most of its energy needs but was also looking to step up investment in renewable industries.

BBC: NEWS | Business | China gets foreign oil incentives

Gas prices have fallen more than 50% since 2008 , yet coal production for the electricity sector, which has been marching up fairly steadily for decades, remains 1 billion tons a year.

FORBES: Frack Gas Not Likely To Displace King Coal, Study Suggests