查询词典 nitrate

Among them, nitrate-sulfuric acid system with higher nitrating activity can get high yields at mild condition in the nitration of deactivated aromatic compounds and could be used in the laboratory and industrial applications.

其中，硝酸盐/硫酸体系具有较强的硝化能力，对于钝化芳环，可以在温和条件下以高收率得到硝化产物，在实验室制备或工业应用中具有较高的应用价值；其他硝化方法由于各种原因暂时不能对钝化程度较高的芳环进行硝化，还需进一步研究具有较高活性的硝化体系。

The green synthesis of nitrate esters using dinitrogen pentoxide (N2O5) as nitrating agent was briefly summarized.

评述了N2O5为硝化剂制备硝酸酯类含能材料的绿色合成技术，分析了N2O5-有机溶剂硝化、N2O5-固体载体硝化和引入保护基硝化等三种体系工艺的过程和特点，展望了各硝化体系的发展前景。

The feasibility of nitrate removal from nitrified landfill leachate in reactors with different sulfur particle size was studied.

在填充不同粒径硫磺的固定床反应器中，研究脱氮硫杆菌去除垃圾填埋场硝化渗滤污水中硝酸盐的可行性。

Excessive application of N-fertilizer inhibited root growth in early stage and promoted that in later stage; 6 gplot^(-1) root dry weights reached gradually and overweighed that of 3 gplot^(-1) until 65 d after transplanting, and 6 gplot^(-1) root activities became stronger than that of 3 gplot^(-1) until 55 d after transplanting; The ratios of root/shoot and the root nitrate activities of 6 gplot^(-1) were less active than that of 3 gplot^(-1) since 45 d after transplanting.

施氮过量抑制根系的早期发育，移栽后65d以前6 g盆^(-1)的处理根干重小于3 g盆^(-1)的处理，65d以后6 g盆^(-1)的处理根干重逐渐达到并超过3 g盆^(-1)的处理；移栽后55d以前6 g盆^(-1)的处理根系活力低于3 g盆^(-1)的处理，55d以后6 g盆^(-1)的处理根系活力高于3 g盆^(-1)的处理；移栽后45d以后6 g盆^(-1)的处理的根冠比小于3 g盆^(-1)的处理，6 g盆^(-1)的处理NR活性小于3 g盆^(-1)的处理。

The mechanical properties of propellants formulation, which containes PEO binder and is plasticized by nitrate ester were studied.

对聚氧化乙烯为粘合剂硝酸酯增塑的高能推进剂配方力学性能进行了研究。

The effect of four types of stabilizers on the thermooxidative stability of nitrate ester plasticized polyether-urethane was investigated by TG.

采用热失重分析法研究了四类稳定剂对硝酸酯增塑聚醚聚氨酯的热氧稳定效果。

The principle,process and technical characteristics from the original prilling ammonium nitrate equipment being transformed into nitrocompound fertilizer production are introduced.

介绍利用原有造粒硝铵生产装置改产硝基复肥的生产原理、工艺流程和技术特点，使用差动式造粒机成功解决了高黏度熔融液造粒困难的问题。

Serum NO level was measured by nitrate reeducates method; plasma ET-...

以硝酸还原酶法测血清NO含量；用放射免疫法测血浆ET - 1和ADM水平。

The treatments with suitable concentration of brassinolide sprayed on leaves of peanut at blossom stage could promote obviously the activity of nitrate reeducates and the content of dissoluble protein and dissoluable sugar in leaves, and increase the activity of roots.

花针期喷施适宜浓度的8R，能显著提高花生的硝酸还原酶活性及叶片可溶性蛋白质和可溶性糖的含量，使主根的根活力增强。

The N input from rainfall in HPA was about 3 to 4 times higher than that in LPA and CK. However, the biomass of vegetables in HPA was decreased by up to 40%, when compared with that in CK, thus leading to a significant decrease in N output through crop harvesting. As a result, a large proportion of N was sequestrated in the soils subjected to acid rain, which subsequently enhanced nitrate leaching posing a risk to water environment.

在酸沉降重污染区，降水输入系统的氮远大于轻污染区和对照区（约3~4倍），同时因酸雨危害，蔬菜产量明显低于对照区，仅为对照区产量的60%，使系统中通过作物收获的氮输出减少，结果导致大量氮滞留于土壤中并以硝态氮等形态淋失，给水环境带来了氮污染风险。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。