另外证实了MBR具有同时硝化反硝化机技术脱氮的作用。

Then it was confirmed that the SND technology can be applied in the MBR treatment.

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本文首次发现灰铸铁中锰的含量对氮的作用效果有显著影响。

It was found that the content of carbon and manganese have a great influence on the effect of nitrogen.

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发生在自然界中，通过某些土壤中的细菌对大气中的氮的作用，和通过闪电将大气中的氮转化成氮的氧化物。

This occurs naturally by the action of certain soil bacteria on the nitrogen in atmosphere, and the conversion of atmospheric nitrogen to its oxides by lightning.

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