生物硝化 bio-nitrification ; nitrification ; biological nitrification

硝溴生 Nibroxane

硝基衍生物 [有化] nitro derivative

生物反硝化 bio-denitrification

反硝化生物滤池 Biofilters for denitrification ; DNBF

硝酸生产用铂网催化剂 Platinum ganze catalyst for manufacture

硝酸生产 [化工] nitric acid manufacture

生产三水硝酸铜 Cupric Nitrate

硝酸盐生化酶 Nitrate reductase