菌根起着固氮和贮氮的作用。
Mycorhizae perform the function of nitrogen fixation and storage.
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.
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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