The dual fuel engine, which uses natural gas as primary fuel and diesel oil as assistant fuel, will be used widely because of the low pollution of natural gas.

采用天然气作主要燃料柴油作辅助燃料的双燃料发动机，因天然气燃烧污染低将会得到广泛的应用。

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The general trunk secondary pump station of Wanjiazhai YRDP is the underground workhouse pump station, and the gas system is the important component of the assistant design of the pump station.

万家寨引黄工程总干二级泵站为地下式厂房泵站，气系统是泵站辅助设计中重要的组成部分。

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The first job is for the environmental assistant and the gas checker to walk through the tunnels monitoring ventilation and air quality.

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So when his friend's father offered him a job as an administrative assistant at Southland Royalty, an oil and gas outfit, he took a pay cut and packed his bags.

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