low-grade gas

英 [ləʊ ɡreɪd ɡæs]

美 [loʊ ɡreɪd ɡæs]

网络低级煤气; 低级煤气,贫煤气

Evaluation of Low-grade Oil and Gas Resources in China and Sustainable Development
我国低品位油气资源评价与可持续开发
The Kremlin has started a low-grade trade war with Ukraine and refused to renegotiate the clearly disadvantageous gas contract signed by Ms Tymoshenko.
克里姆林宫已经开始了一场与乌克兰较量的低端贸易战，并拒绝重新谈判季莫申科签署的关于天然气问题的不公平条约。
It shows that steam distillation ( extracted by and dichloromethane) losed some low-grade esters and fusel oil compare with the gas adsorption. but it can get more components which is solide under normal temperature and also can condense the aromas.
结果表明，水蒸气蒸馏法和气体吸附法相比损失了低级酯和杂醇油类组分，常温下难以挥发的固体组分也能够通过水蒸气蒸馏法检测出，但是芳香族类明显得到浓缩。
The paper, for the first time, discussed systematically the counter measures for the "low-grade" oil and gas, e.g. oil resources under difficult conditions based on historical analysis and comparative analysis with foreign practices.
首次根据历史分析和国外对比，系统地探讨了我国低品位油气资源，即难采石油资源的开采利用对策。