This paper presents the new ideas of Coal-formed gas and Oil-related gas and the new method to distinguish them.

本文提出了“煤型气”和“油型气”的新概念与划分“煤型气”和“油型气”的新方法。

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The data from gas production test show there are good exploration prospects in Bohai Bay Basin for deep upper-Paleozoic coal-formed gas.

试气资料表明：渤海湾盆地深层上古生界煤成气具有良好的勘探前景。

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Therefor, it is necessary to study the depositional environments of the coal formed gas source rock for the benefit of exploration and development.

因此，开展煤成气源岩沉积环境研究有利于该区煤成气资源的勘探与开发及合理的利用。

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It formed a huge gas ball that expanded rapidly.

VOA: special.2009.07.22

Dr. THOMMES: Well, what we think happened in our solar system is that we are an example of a system that was sort of near the boundary between something that actually formed gas giants, formed, well, the Jupiter and Saturn that we see today, and something that if conditions had been a little bit different wouldn't have really formed any gas giants at all.

NPR: What Makes Our Solar System Special?

But the traffic increase has slowed progress in reducing emissions further, and people in many areas still suffer from nitrogen-related air pollution, including small particulates that get sucked deep into the lungs, and ground-level ozone - a strongly irritant gas formed by the action of sunlight on reactive nitrogen.

BBC: Nitrogen pollution 'costs EU up to ?280bn a year'

The first stars formed when clouds of gas bunched together due not only to the pull of their own gravity, but also that of dark matter.

MSN: We could soon detect the first stars in our universe