The quality of a source rock that makes it more likely to generate oil than gas.

烃源岩的质量使其更像是易于生油的而不是生气的。

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As an energy source of high quality and a chemical material, people have paid more attention to the accuracy measurement of natural gas.

天然气作为一种优质能源和化工原料，其计量的准确与否受到了人们的普遍重视。

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In the paper, it is discussed the whole process of quality control in waste gas (stationary pollution source) monitoring, which includes the preparation, monitoring, and data processing, etc.

文章探讨了废气(固定污染源)监测中监测前准备、监测过程、数据处理等全程序的质量控制。

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President Barack Obama has strongly endorsed natural gas as a clean energy source, and New York Mayor Michael Bloomberg has said more natural gas is critical for the city to improve air quality and public health.

WSJ: NY town of 9/11 workers wages gas pipeline fight