“除氮”的英语可以翻译为：denitrogenate ...

土壤中的养分除氮外, 最初的来源都是母岩.The nutrient in soil divides nitrogen outside, prime source is Mu Yan.另外,还简略介绍了生物除氮磷的基础理论.It also summarizes basic principles on biological nitrogen and phosphorous asas some new significant views....

“除氮器”的英语可以翻译为：denitrator ...