氮在自然界中的循环转化过程。是生物圈内基本的物质循环之一。如大气中的氮

氮在自然界中的循环转化过程。是生物圈内基本的物质循环之一。如大气中的氮经微生物等作用而进入土壤，为动植物所利用，最终又在微生物的参与下返回大气中，如此反复循环，以至无穷。

結果 (英文) 1:

Nitrogen transformation processes in nature. Is one of the basic material cycle in the biosphere. Such as atmospheric nitrogen through microbial action in soil, used by the fauna and flora, and eventually in microbial returns with the participation of the atmosphere, this repeated cycle, ad infinitum.

結果 (英文) 2:

Nitrogen cycle in nature conversion process. It is one of the basic material recycling biosphere. As atmospheric nitrogen by microbial action and the like into the soil, plants and animals exploited and, eventually, with the participation of microorganisms returned to the atmosphere, and so the cycle repeated, ad infinitum.

結果 (英文) 3:

The cyclic transformation process of nitrogen in nature. Is one of the basic material cycles in the biosphere. Such as the atmosphere of nitrogen by the role of microorganisms into the soil, for the use of plants and animals, and ultimately in the participation of micro-organisms to return to the atmosphere, so repeated cycles, as well as infinite.