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China is a product of Eastern civilization -- and specially, of Chinese civilization.

中国是东方文明的产物——尤其是中国文明的产物

The results of study on formation characteristics of chlorination byproducts showed that, chloramine disinfection could reduce the formation of DBPs effectively, but the control effects were different for different kinds of organisims.

氯化消毒副产物的生成特性研究结果表明,采用氯胺消毒能较有效地减少消毒副产物的生成,但对于不同类别的有机物,其控制效果不尽相同。

The oxidation products of ammonia related with the content of electrolyte and pH. When chloride presented, the main product was N2, a little chloramine and NO3-.

电化学氧化产物与体系组成及pH值有关,在氯离子存在的情况下,产物主要是N2和少量的氯胺及硝酸根。

Alkylations of benzene with dodecene and/or chloromethane in the room temperature ionic liquid 1-methyl-3-butylimdazole chloride-aluminium chloride as catalyst have been investigated with high conversion and selectivity.

首次研究了在氯铝酸室温离子液体系中二甲苯与苯乙烯的烷基化反应制1-苯基1-二甲苯基乙烷及其衍生物。考察了离子液体催化剂量和反应条件的不同对产物组成及副产物数量的影响。

The preparing process is described as follows:(1) the raw materials are dispersed in the solvent;(2) the solution is arranged between two electrodes;(3) alternating current with a voltage of 5 V-100V and a frequency of 10Hz-1000Hz is applied to both ends of the electrodes for 5minutes to one hour;(4) the product obtained after being washed with deionized water and pump filtrated or after centrifugal treatment is dried by being heated to 40 centigrade to 100 centigrade to get the nanometer grain, wherein the raw materials in the first step are micrometer materials or nanometer materials such as sulphide, selenide, telluride and oxide; without special requirement on shape or appearance, the materials can be in the shape of a rod, a fork, a star, a block or a sphere; the solvent in the first step can be water, ethanol, acetone, benzene or tetra chloromethane.

步骤为:1将原料分散于溶剂中;2使制成的溶液处于两电极之间;3在电极两端的加交流电,电压为5V-100V,频率为10Hz-1000Hz,时间为5min-1h;将产物用去离子水洗涤、抽滤,或进行离心处理后;4将所得到产物加热到40~100℃进行干燥,得到纳米颗粒。步骤1中原料为硫化物、硒化物、碲化物、氧化物等微米或纳米材料,其形貌不限,可以为棒状、枝状、星状、块状、球形等多种形状。步骤1中的溶剂可以为水、乙醇、丙酮、苯或四氯化碳。

In this study, the effects of adding chlorophenol, acetic acid and ozone were investigated separately in order to further study the mechanism of UV induced enhancement. The experimental results showed that adding acetic acid into the inlet gas decreased the chlorobenzene removal rate of the biofilter.

为了考察紫外预处理对生物过滤塔的影响机理,本研究分别考察了氯苯紫外光降解主要产物氯酚、乙酸以及副产物臭氧对生物过滤塔运行性能的影响。

The reaction of α-hydroxyketone with Michael acceptor nitroalkene.was studied. After many experiments, we then found that in the presence of Zn2 and cinchonine, the α-hydroxyketone could successfully react with nitroalkene. Under our optimized condition, we gained the 95% yield of product with the ratio of syn : anti of 3:1 and 72% ee value for syn-product.

有机碱作用下α-羟基酮对硝基烯烃的加成反应研究研究了α-羟基酮类化合物与Michael受体硝基烯烃类化合物的反应,通过分析和实验发现在Zn2和辛可宁的作用下α-羟基苯乙酮能够与硝基烯烃化合物顺利反应,在优化的条件下以95%产率和3:1的Dr主要得到顺式产物,其中顺式产物的ee值最高为72%。

The flow of molten metal are the forefront of the lost foam pyrolysis products, it will happen with the liquid metal reflect and affect the quality of metal liquid, if the liquid metal filling process in pyrolysis products should not rule out smoothly, it is easy to cause stomatal , Cockle, by defects such as carbon.

金属液的流动前沿是热解的消失模产物,它会与金属液发生反映并影响到金属液质量,如果金属液充型过程中热解产物不能顺利排除,就容易引起气孔、皱皮、增碳等缺陷。

Urbanization is the common law of the development of the humanity society.

城市是人类文明进步的产物,是社会生产力发展的产物

In the compound produced by the planar device, there are even SiC whiskers found with length longer than 1 micron and diameter less than 30 nanometers.

冲击合成的SiC产物晶粒细小,而且在平面冲击波合成产物中观察到长度超过1微米、直径小于30纳米的SiC晶须。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力