nitrogen concentration的例句大全

Effects of different Nitrogen, Phosphorus and Potassium Concentration on Production of No-tillage Corn

氮磷钾不同配比对玉米免耕产量的影响

Purification efficiency of low nitrogen and phosphorus concentration with constructed wetland of saline-alkali soil substratum

盐碱土壤基质人工湿地对低浓度氮磷废水的净化效果

Chemiluminescence and photon detection for low concentration nitrogen oxide in atmosphere

低浓度氮氧化物的化学发光和检测

Pilot test on treatment of high concentration nitrogen oxides by high gravity technology;

介绍了氮氧化物排放污染的危害以及氮氧化物控制的方法。

Effect of electro-catalytic degradation of total nitrogen of the primary and secondary factors as follows: the initial pH value initial concentration of ammonia current density chloride ion concentration.

影响总氮电催化降解的各因素的主次顺序如下：初始pH值氨氮初始浓度电流密度氯离子浓度。

To discover the optimal ratio of nitrogen to phosphorous for freshwater pelagic diatom ( Bacillariophyta), we take 3 times trials on condition that the concentration of N is 0.5 mg/ kg.

在以氮为0.5mg·kg-1的条件下对淡水浮游硅藻的最适氮磷比进行了3次试验。

The optimum concentration of urea nitrogen was 20 ppm, higher or lower than this level were not fit for the growth and reproduction of the diatoms.

尿素态氮的浓度以20ppm最适宜，过高过低对硅藻的生长繁殖都不利。

The Development of a Monitor for UDMH and Nitrogen Dioxide of High Concentration in Air

空气中高浓度偏二甲肼和二氧化氮监测仪的研制

The concentration of nitrogen dioxide gas could be automatically and continuously measured by the system, through program control.

通过程序控制，该系统可以自动连续对二氧化氮气体浓度进行测量。

The concentration of nitrogen dioxide in Beijing's air was reduced by an average of 20 per cent.

北京空气中二氧化氮的含量平均降低了20%。