查询词典 ammonia

Based on the catalytic oxidation of isatin with potassium iodate catalyzed by nickel in ammonia me dium, a kinetic spectrophotometric method for determining trace nickel in oil was developed and the kinetic condition was studied.

基于氨性介质中镍催化高碘酸钾氧化靛红褪色反应，建立了测定油品中痕量镍的新方法，探讨了其动力学条件。

The Jovian planets are all large and have low mean densities, indicating they are composed of lightweight gases such as hydrogen and helium, as well as frozen compounds such as ammonia and methane.

木星类行星都有体积大密度小的特征，这表明他们成分构成不仅包括冻结复合物，如氨和甲烷，还包括重量轻的气体，如氢和氦。

With and without the assistance of one water, ammonia, and methanol molecule, the proton-transfer tautomerisms of 2-hydroxylpyridine are investigated systematically employing the B3LYP/6-311++G** level of theory. Both the keto and hydroxyl form of 2-hydroxylpyridine can exist stably though the keto form is slightly more stable than that of hydroxyl form.

采用量子化学中的密度泛函理论，在B3LYP/6-311++G**计算水平上，系统考察了在水、氨和甲醇分子辅助下，2-羟基吡啶醇式和酮式结构的质子转移异构化行为。

With the increasing of stress and incensitive rearing, change of rearing method and high rearing density, Mycoplasma Gallisepticum infection have already been a major problem that affects the poultry industry through its increased morbidity. MG infection can be easily triggered under such environment as poor ventilation , a sudden air temperature change and excessive ammonia and dusts ,even after vaccinating the live vaccine such as Newcastle disease, Infectious bronchitis and Infectious Laryngotracheitis can also triggered this disease.

随着养鸡集约化程度的提高，饲养方式的改变以及饲养密度的提高，在通风不良、空气中氨和灰尘增加或气温骤变等环境中极易诱发本病；甚至接种鸡新城疫、传染性支气管炎和传染性喉气管炎等活疫苗后也都可能诱发本病。

Therefore, in promoting their own house can confidently say that their own homes拍着胸脯No problem, ammonia is not exceeded, the area will not shrink, the property management did not dispute, green space occupier would not be unreasonable, clubs will not be baffled by opinions on a leased line.

因此，在促进自己的房子可以自信地说，自己的家园拍着胸脯没有问题，氨不超过，该地区将不会萎缩，物业管理没有异议，绿地占用将不会是不合理的，俱乐部将不会困惑意见的租用线路。

Fourthly, taking three groups of water quality data of Jinhe River as original data, prediction to water quality of the river was made. Compared with real monitored value, the error of predicted value of all of simulating terms, including dissolved oxygen, bio-chemical oxygen demand, chlorophyll a, organic nitrogen, ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, organic phosphorus, dissolved phosphorus and temperature, were basically within error limit of 20%, which validated the validity of the model.

第四，以津河三组水质数据为原始数据，通过建立的模型对津河水质进行预测，水质变量溶解氧、BOD、叶绿素、有机氮、氨氮、亚硝酸盐氮、硝酸盐氮、有机磷、溶解性磷和温度的预测值与实际监测值均在所设定的误差范围20%之内，验证了模型的有效性。

The effect of liquid ammonia pretreatment on the accessibility and carboxymethylation reactivity of cotton linter cellulose;2. The accessibility acquired through dynam.

由动态粘弹谱内耗曲线积分求得的可及度与上染率之间具有良好的对应关系，可及度高时上染率也高；达到85%上染率时，可及度要求达到3。

The method is right tall lipemia group (81) contrast with normal blood fat group (65), with analysis of appearance of gas phase color atlas all sorts of armour ester change the content of fatty acid of plaque phosphatide film, determine with standard method the thrombosis in blood endangers factor, serum is the same as model half Guang ammonia is acerbity and element of 11- dehydrogenation thrombus B2(TXB2), analyse the dependency between both with multivariate and linear regression.

方法对高脂血症组(81例)和正常血脂对照组(65例)，用气相色谱仪分析各种甲酯化血小板磷脂膜脂肪酸的含量，用标准方法测定血液中血栓形成危害因子，血清同型半胱氨酸及11-脱氢血栓素B2(TXB2)，并用多元线性回归分析二者之间的相关性。

In chemical plant,liquefacient ammonia leaking from refrigeration equipment usually disperse in the air and become dense gas at the beginning.With the air coming into the gas,it will be increasingly close to the air density and become non-dense gas.

化工厂制冷装置发生液氨泄漏，泄漏后形成毒气云团在空气中扩散，初期多形成重气云团，在扩散过程中随着空气的不断卷吸，重气云的密度会越来越接近空气，从而转变为非重气云团。

Ammonia gas NH3 is colorless which can turn wet red litmus paper to blue.

氨气是无色的，它可把湿的红色石蕊试纸变成蓝色。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。