Currently, Chongqing has more than 120 CO2 point emission sources.

目前，重庆有超过120个CO2集中排放源。

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Agriculture is one of the important greenhouse gas emission sources.

农业是重要的温室气体排放源。

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To a great extent, the effect of twinkle jamming lies in the distance between the emission sources and the twinkle frequency.

闪烁干扰的效果在很大的程度上取决于发射源之间的距离和闪烁频率。

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What Santorum is not telling you is that we have long had regulations on mercury emissions for other types of emission sources such as waste incinerators.

FORBES: The Hypocrisy And Stupidity Of The GOP's Hatred Of The EPA

Imagine a deal involving emission sources in China, which has some of the world's most polluting coal-fired power plants, and California, which is on a course to become one of the most stringently controlled states in carbon emissions.

CNN: Quicker fix for climate change

There are, however, no interference problems with field-emission X-ray sources, so these can be used to take high-resolution pictures while treatment is proceeding.

ECONOMIST: Modern X-ray technology