乙烷

The production process for vinyl chloride is substituted that based on ethylene dichloride for ethine. It is forecasted that it will quickly increased for the demand of ethylene dichloride.

中国的氯乙烯单体生产方法正由乙炔法转换为二氯乙烷法，预计二氯乙烷的消费将有一个快速发展。

Can be obtained. Based on the experimental results above, the activation processes of ethane and active sites needed for ethane were determined.

根据实验结果对乙烷活化机理以及所需活性位进行了分析，确定了乙烷部分氧化的反应机理。

That may partially explain the lack of liquid ethane oceans and clouds at Titan's middle and lower latitudes.

这或许能部分的解释泰坦中低纬度地区缺乏乙烷海洋和乙烷云。

Advances in ethane dehydrogenation to ethene have been reviewed.

乙烷脱氢制乙烯是乙烷利用的有效途径。

The methods and measures for improving the competition of domestic ethylene oxide in international market were pointed out.

本文对国内外环氧乙烷生产技术现状，发展动向，以及市场供需状况作了概要叙述，并指出了提高我国环氧乙烷国际市场竞争力的方法和措施。

The kinetics of hexachloroethane dissolution into surfactant solution was studied and a mathematical model describing the mass transfer process was developed.

为了解表面活性剂溶液对憎水性污染物增溶过程的影响因素，研究六氯乙烷在Tween20溶液中的增溶动力学过程，建立了六氯乙烷在表面活性剂溶液中增溶的传质模型。

It was found that surfactant decreases the observed mass transfer coefficient relative to water alone, however, the influence of surfactant on hexachloroethmane solubilization results in an overall increase in hexachloroethane dissolution rate.

发现六氯乙烷在表面活性剂溶液中的表观传质系数和纯水中的相比降低了，但由于表面活性剂对六氯乙烷的增溶作用导致其溶解速率总体上是提高的

The model indicated that dissolution rate is directly proportional to observed solubility and observed mass coefficient of hexachloroethane in surfactant solution.

模型表明当六氯乙烷总表面积固定时，其溶解速率同六氯乙烷在表面活性剂溶液中的表观溶解度和表观传质系数呈正相关。

Is now an annual production capacity of calcium chloride, bromide, DecaBDE, DBDPE three bromine phenol, Tetrabromobisphenol A, octabromodiphenyl ether, benzyl bromide, diphenyl ether, dibenzo ethane and other chemicals, 5,000 tons of bromine, hydrogen bromide by-product 5000 tons, the product export to Europe and Southeast Asia market, the company owns self import and export rights, and have passed the ISO9001: 2000 certification, is the most full-bromine chemical species, product quality, one of the best high-tech enterprises.

现已形成年产氯化钙，溴素，十溴二苯醚、十溴二苯乙烷、三溴苯酚、四溴双酚A、八溴醚、溴化苄、二苯醚，二苯乙烷等各类溴化学品5000吨，副产溴化氢5000吨，产品出口欧洲和东南亚市场，公司拥有自营进出口权，并已通过ISO9001：2000认证，是国内溴化学品种最全、产品质量最好的高新技术企业之一。

Being combining with products distribution in styrene oxidation, we propose the styrene epoxidation carry out with Ti metallacyclo intermediates, And at the same time Ti-ZSM-5 have properties both catalytic epoxidation and acid-catalysis, namely the skeletal Ti can catalyze styrene epoxidation to styrene oxide and the skeletal Ti and Al can provide Lewis acid site to cause the rearrangement of styrene oxide to phenylacetaldehyde rapidly, the solvolysis to glycols and the cleavage of C=C double bond. Ti-ZSM-5 can also provide Bronsted acid site simultaneously, which is also catalytic center for the solvolysis to glycols.

同时结合Ti-ZSM-5催化选择性氧化苯乙烯反应的产物分布结果，提出苯乙烯环氧化反应可能是通过金属有机环机理进行；Ti-ZSM-5同时具有催化环氧化和酸催化两种功能，其骨架钛可催化苯乙烯环氧化生成环氧苯乙烷，而骨架钛和骨架铝等可提供Lewis酸位使环氧苯乙烷迅速发生重排生成苯乙醛从而使其成为反应的主要产物，同时还可发生加成以及碳碳键的裂解等副反应：Ti-ZSM-5也提供Bronsted酸位，它也是生成加成产物的活性中心。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。