N and P是什么意思

用法例句

Based on the principle of active biofilm expansion ,a non-steady state analytic mathematical model of microbial interactions in nitrifying biofilm was developed.

根据活性生物膜扩张原理，建立了硝化生物膜中微生物相互作用的非稳态解析数学模型，并可预测生物膜厚度的变化与微生物菌群的空间分布。

Investigation on the Variety of Biology in Luyun Ecological Garden of Dongguan;

东莞市“绿韵”生态园区生物物种变化情况调查

Enhancement of quality-based education of students in specialized English teaching of biology;

论生物专业英语教学中加强学生的素质教育

The Physical-chemical Properties of Magnetized Water and Its Application on Biology;

磁处理水的理化特性及其在生物方面的应用