常見例句雙語例句Nitrogen fixation trees of Leguminosae and non-Leguminosae are important biological nitrogen fixation resources.豆科及非豆科固氮樹種是重要的生物固N(yùn)資源。The traditional methods of biological nitrogen removal adopted nitrification and nitrification technology, but there are lots problems.傳統(tǒng)的生物脫氮採用的是硝化、反硝化工藝，但存在著很多問題。Biological nitrogen fixation (BNF), which provides all the plants on the globe with 75% of fixed nitrogen, is one of the important projects in life science.生物固氮爲(wèi)全球的植物提供75%的氮素，是生命科學(xué)中的重大課題。 返回 biological nitrogen