This paper introduces manual distill natural gas by coal gasification in the methanol extraction of artificial, and Siemens PCS7 DCS and SIS system application in this project.

本文概括的介绍了甲醇吹除气人工提取煤基天然气的工艺过程，以及西门子PCS7 DCS和SIS系统在本项目中的应用。

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GASCO is considered to be an operating company which is responsible for extraction of liquid of natural gas from different associated gases.

加斯科被认为是负责从不同的相关的气体中提取液态天然气的经营公司。

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"It could be hitting natural fractures that already exist." Fox notes that toxic gases like benzene,toluene and hexane also accompany natural gas extraction.

VOA: standard.2010.01.02

Natural gas extraction from shale deposits currently accounts for around 34 percent of the total U.S. output.

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Investment in natural gas extraction projects has poured into regions across the country, from North Dakota to Pennsylvania.

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Governor John Kasich (R) wants to raise taxes on natural gas extraction and use the proceeds to cut income taxes.

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