查询词典 chlorine dioxide

The paper researched on characters of NOMbased on the fractionation of NOM,and studied the control of DBPs( disinfection by-product s) by chloramine compared with chlorine.

在对天然有机物分类的基础上进行了水体中有机物的特性研究，并采用氯胺对不同特性有机物的氯化消毒副产物进行了控制研究。

The models of AOC changes in distribution systems, which were more accordant with the actual conditions of distribution systems, were proposed based on the phenomena that the oxidative reactions of chlorine and chloramine with organics forming AOC had two increase periods and one decrease period.

氯和氯胺氧化水中有机物成为AOC的反应都存在两个较快增长期和下降期，由此提出了AOC在配水管网中变化的改进模型，使它更符合管网中的实际情况。

The paper researched on characters of NOMbased on the fractionation of NOM,and studied the control of DBPs(disinfection by-products) by chloramine compared with chlorine.

在对天然有机物分类的基础上进行了水体中有机物的特性研究，并采用氯胺对不同特性有机物的氯化消毒副产物进行了控制研究。

Even tap water invariably contains a variety of poisons such as chlorine, chloramine, asbestos, pesticides, fluoride, copper, mercury, and lead.

就是自来水也必定含有各种有害物质，如氯、氯胺、石棉、杀虫剂、氟化物、铜、铅等。

This study examined the impact of the pH and ratio of chlorine to ammonia-nitrogen(Cl2:N ratio) on the formation of trihalomethanes and haloacetic acids(HAA5)in water system with chloramine,under two-day simulated pipeline system.

本试验模拟管网，取典型的停留时间2d，考察了氯胺消毒时，pH和Cl2：N对管网中的消毒副产物浓度的影响。

Potassium Chlorate is a compound containing potassium, chlorine and oxygen. It is often used as a disinfectant and in fireworks and explosives.

氯酸钾是一种含有钾、氯和氧的化合物，经常用在消毒剂、烟火和炸药中。

Legionnaires disease can be prevented by proper chlorination (treatment of water with chlorine) and sealing of water supplies.

军团病是可以预防的，由适当的加氯和密封水的供应。

First, the preparation of l,2-dichloro-4-nitrobenzene, which l-chloro-4-nitrobenzene reacted with chlorine in a self-designed chlorinator, in presence of Lewis acid catalyst,.was investigated. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the yield of l,2-diehloro-4-nitrobenzene was 83.26%.

为此，本文首先在自行设计的塔式氯化器中，以对硝基氯苯为原料，路易氏酸作催化剂，分子氯氯化合成3，4-二氯硝基苯(合成3-氯-4-氟-硝基苯的原料)，根据该氯化过程特征，利用正交试验设计方法结合单因素实验考察了有关因素对氯化过程的影响，优化得到了最佳的氯化工艺条件，3，4—二氯硝基苯的收率可达83.26％。

First, a chlorinator was self-designed in this paper, and dichloride of 2-methyl-1-propene was synthesized by 2-methyl-1-propene reacted with chlorine fast in this reactor. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the yield and selectivity of dichloride of 2-methyl-1-prop-ene were more than 65% and 80% respectively. Second, the preparation of 2-methylene-1, 3-propanediol, which dichloride of 2-methyl-1-propene reacted with alkali was investigated. By means of the Orthogonal Experiments design and single factor experiments, the influence of several reaction variables on the yield were examined and the optimum reaction conditions under the intervallic operation were obtained, the conversion of dichloride of 2-methyl-1-propene was 100%. Moreover the preparation of MPO, which 2-methylene-1, 3-propanediol reacted with hydrogen, in presence of Al_2O_3-Pd catalyst, was gotten, and the product was appraised.

本文在氯化反应过程中，自行设计制作出了氯化管式反应器，在该反应器中异丁烯和氯气迅速混合反应生成二氯异丁烯，根据该氯化反应特征利用正交试验和单因素试验考察了有关因素的影响并优化得到了最佳工艺条件，二氯异丁烯的总收率达65％以上，选择性达80％；接着，对二氯异丁烯进行水解反应制得了2-甲烯-1，3-丙二醇，讨论了相关因素对水解反应的影响，并通过正交试验和单因素试验得到了较佳工艺条件，二氯异丁烯的转化率达100％；同时还对制备的2-甲烯-1，3-丙二醇在常压下采用三氧化二铝负载钯催化剂催化加氢得目的产物MPO，并对产品进行了鉴定，从而打通了整个工艺路线。

Do you know what chlorine is?

你知道什么是氯吗？

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。