查询词典 Ammonia

The paper mainly studies the new preparation technologies of cyanamide. The paper reviews the preparation technologies of cyanamide in domestic and overseas. We analyze the advantage and disadvantage of all the technologies, and we design two new technologies: urea- cyanamide method and ammonia, carbon dioxide- cyanamide method.

本文主要研究了制备氰胺的新工艺，综述了国内外氰胺工业生产的几种主要工艺，分析了各工艺的利弊，设计了两条新的工艺路线，即尿素-氰胺法和氨气、二氧化碳-氰胺法。

Urea-cyanamide method: With different catalyst, under the condition of some temperature and time, urea and ammonia manufacture cyanamide under normal pressure.

尿素-氰胺法：使用改性分子筛做催化剂，在一定温度和停留时间等反应条件下，在氨气气氛中，使尿素在常压下脱水一步制备氰胺。

Furthermore, this paper explored a new feasible process of cyanide recovery,investigated the effect of time, concentration of H2SO4 and temperature on the elution of cyanide and zinc in the process of first stage elution, and discussed the effect of time,concentration of ammonia water, temperature and ultrasonic on the elution of copper in the second stage elution.

另外，本实验探索出一种可行的回收氰化物新工艺，在硫酸解吸过程中，研究了硫酸解吸的时间、浓度和温度因素对氰和锌的解吸率的影响；在氨水解吸实验中探讨了时间、温度、浓度、超声波等因素对铜解吸率的影响。

Shenzhen city dragon vacates Wu Xianfeng of president of asset management company to think, we once had tried to have the long-term investment of type of Ba Fei spy in field of A stock market, but practical effect is not ideal; And Meng Niu invests in Hong Kong market, also as a result of 3 get together the concussion blow of cyanogen ammonia incident is very big.

深圳市龙腾资产管理公司董事长吴险峰认为，我们曾经尝试过在A股市场进行巴菲特式的长期投资，但实际的效果并不理想；而在香港市场投资蒙牛，也由于三聚氰氨事件的冲击打击很大。

The ammoximation of cyclohexanone with H2O2 and ammonia catalyzed by TS-1 is an environment-friendly process.

钛硅-1（TS-1）分子筛催化的环己酮氨氧化反应是一个绿色过程。

In order to explore the mechanism of the resistance to cucumber damping-off induced by plant growth-promoting rhizobacteria CH1, the physiological and biochemical method was employed to study the changes in activities of Phenylalanine ammonia-lyase, Polyphenol oxidase and contents of ferulic acid, chlorogenic acid, lignin, phenolic compound and flavonoid of phenolic metabolism in cucumber roots pretreated with plant growth-promoting rhizobacteria CH1 and infected by Pythium aphanidermatum.

为研究植物生长促生细菌CH1诱导黄瓜对猝倒病的抗性的作用机制，采用生理生化的方法，测定了黄瓜根部酚类物质代谢中苯丙氨酸解氨酶、多酚氧化酶活性动态及阿魏酸、绿原酸、木质素、总酚、类黄酮含量变化。

Liquid ammonia which is used commonly for denitration is hazardous and inflammable chemicals,and belongs to class B inflammable liquid.

液氨是脱硝制剂广泛使用的原料，是一种有毒、易燃的化学危险品，属火灾危险性乙类液体。

Carbonyls groups in deodorant can react with ammonia to effective deodorize NH_(3) and H_(2)S, with total removal rate up to 99% under certain conditions.

恶臭作为一种环境污染已成为世界七大公害之一[1]。恶臭源有工业源和生活源。主要集中在生产过程中，对劳

The technology of biological nitrogen removal by nitrosification denitrification, which has been developing a few years, is the combination between the oxidation of ammonia and the deoxidation of nitrite.

亚硝酸型硝化反硝化生物脱氮技术是近年来发展起来的新型的生物脱氮技术，其实质是氨的氧化与亚硝氮的还原相偶联。

Adopting prior and posterior deposal system met the demands of filtrating,removing ammonia,rising oxygen,sterilizing and antisepsis.

采用前、后处理系统来满足过滤、除氨氮、杀菌消毒、增氧等需要。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。