And a new study shows that biochar could have an impact on agriculture's other greenhouse gas emission: nitrous oxide, or laughing gas, which is no laughing matter when it comes to climate change.

一项最新研究表明生物炭对诸如一氧化二氮、笑气之类由农业生产造成的温室气体排放可能会产生影响，这些气体的排放对气候变化来说可不是什么好事。

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The working principle of the system is: DPF filters the particulate matter (PM) in diesel engine exhaust, to make emission up to certain standard.

系统工作原理是：DPF过滤柴油机排气中的颗粒物（PM），从而使排放达到相应的标准。

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The X-rays are sent off into space before the matter crosses the Schwarzschild radius and crashes into the singularity. Thus we can see this X-ray emission.

在物质穿过希瓦兹凯尔德半径，被压挤成单一体之前；x射线会进人太空，因而我们能够发现这种x射线辐射。

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