查询词典 nitrogen

The structure and the techniques of carrousel oxidation ditch process on nitrogen and phosphor removal are introduced in this paper.

氧化沟又名连续循环曝气池，是活性污泥法的一种变形。

Four nitrogen sources were used in the experiments, i.e. urea, casein, lysine and methionine.

主要选用了四种氮源：尿素、酪蛋白、赖氨酸和蛋氨酸。

Cellulose Nitrate; Nitrocellulose containing a maximum of 12.6% Nitrogen

硝酸纤维素；硝化纤维素含氮量不超过12.6

In order to explore the relationship between structure and properties of hydroxyalkyl cellulose ether nitrate, molecular structures of nitrate ester of hydroxylethyl cellulose ether, nitrate ester of hydroxylpropyl cellulose and nitrate ester of cellulose glycerol ether with molar substitution of 1 were simulated by using Synthia module of Materials Studio, and their performances of nitrogen content, glass transition temperature and Young's modulus were predicted.

为探索羟烷基纤维素醚硝酸酯的结构与性能关系，借助Materials Studio软件中的Synthia模块模拟了摩尔取代度为1的羟乙基纤维素醚硝酸酯、羟丙基纤维素醚硝酸酯和二羟丙氧纤维素醚硝酸酯的结构，并预测了它们的含氮量、玻璃化转变温度和杨氏模量。

The research results indicated that the best base was KOH, the best acid was H3PO4 and their neutralizing products were the necessary nutrients for foliar fertilizer; 12.4 L of foliar fertilizer were obtained in per kg of shrimp offal, chitin was obtained in 13.8% yield, crude protein was obtained in 23.2% yield using this method; This multifuctional foliar fertilizer was an abundant nutritional multifunctional foliar fertilizer which contained 15 kinds of amino acids, shimp cephalin, astacein and many trace elements. The concentration of calcium was 38.9 mg/L, the concentration of magnesium was 55.4 mg/L, the concentration of potassium was 20.0 g/L, the concentration of nitrogen was 4.5 g/L and the concentration of phosphorus was

研究结果表明：(1)处理虾下脚料的最佳碱是KOH，最佳酸是H3PO4，其中和产物是叶面肥必需的营养素；(2)本工艺不仅每Kg虾下脚料可制备虾叶面肥12.4L，而且可回收13.8％甲壳素和23.2％粗蛋白质；(3)经分析测定虾叶面肥中，含钙(Ca2+)38.9 mg/L，含镁(Mg2+)55.4 mg/L，含钾20.0 g/L，含氮4.5 g/L，含磷 78.9 g/L，还含有15种氨基酸及虾脑磷脂、虾红素及多种微量元素等，是一种营养丰富的多功能叶面肥。

That was build basing on subprogram of nitrogen element balance of CERES model and by means of Object-oriented programming.

它可以模拟土壤有机物质和作物残留的周转过程，也可以模拟尿素和硝态氮的水解和氮素的损失。

With nitrogen cesium, but under high temperature, and reaction generated fairly stable hydride.

铯不与氮反应，但在高温下能与氢反应，生成相当稳定的氢化物。

Nylon, for example, is a manmade fibre with molecules made out of carbon chains in which atoms of nitrogen, hydrogen, and oxygen fit in a particular arrangement.

例如，尼龙就是一种人造纤维，这种纤维由碳链组成的分子构成，而在碳链中，氮、氢和氧原子处于特殊排列状态。

The nitrogen content, structure and properties of NCAGE were measured and chara...

结果表明，新型高能粘合剂同时含有-ONO2和-N3基团，其含氮量可达到15%～21%，结晶性下降，在204℃分解，有较大的放热峰，在丙酮等有机溶剂中溶解性很好。

Numerical simulating of the regulation was made. The mathematics model of water movement and the experience model of water absorbing were constructed for tomato, basing on the study on the characteristic of its root distribution. Movement of soil water was simulated, and the front of nitrogen was forecasted, using the piston flow model.

根据温室滴灌西红柿的实际情况，在对西红柿根系分布特征的田间试验分析的基础上，建立了滴灌西红柿水分运动数学模型和西红柿根系吸水经验模型，对田间土壤水分动态进行了模拟，运用简化的氮素运移活塞模型对土壤中氮素溶质锋面进行了预测。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。