乙烷

We studied the number of ordinated water of polyoxometalate catalysts how to affect the catalytic activity.

2，研究了1 ， 2-二氯乙烷做溶剂，催化氧化环己烯的体系中杂多酸所含配位水的数量对催化剂活性的影响。

Axial group, substitution on the aromatic rings of SalenAlX, and co-catalyst all affect catalytic properties of these aluminum complexes.

设计合成了一系列四齿席夫碱铝配合物，它们可以溶解在超临界CO〓／环氧乙烷混合物中，是CO〓和环氧烷烃环加成反应的有效催化剂。

Advances in silver catalyst for ethylene oxide from ethylene by direct oxidation at home and abroad were reviewed,based on the status,progress,and trend of its technology.

主要从技术现状、技术进展和发展趋势等几方面，对国内外乙烯直接氧化制环氧乙烷的银催化剂的进展情况进行了综述。

Is a professional production of various kinds of single-use medical device packaging supplies company in accordance with the requirements of customers in the production of suitable ethylene oxide, cobalt-60 radiation and steam sterilization different , the way the various specifications for sterilization medical packaging bag.

南通市索派医用包装材料有限公司是一家专业生产各类一次性使用医疗器械包装用品的企业，公司能根据客户的要求分别在生产出适合于环氧乙烷，钴60射线和蒸汽等不同的消毒，灭菌方式的各种规格的医用包装袋。

The invention relates to a kind of middle/high temperature heat pump refrigerant mixture containing trifluoroiodomethane (R13I1) and tetrafluoroethylene (HFC134a), which is suitable for using as the refrigerants for middle/high temperature heat pump system with a temperature of 60~120deg.C.

一种含有三氟碘甲烷(R13I1)和四氟乙烷(HFC134a)的中高温热泵混合工质，适合作为冷凝温度为60-120℃的中高温热泵系统的制冷剂。

N-methylmaleimide was prepared by using dimethyl sulfate as methylation reagent.The paper investigated the addition of N-methyl-3,4-dibromomaleimide and indolylmagnesium bromide,and then 2-bromo-3-(1H-indolyl-3-yl)-N-methylmaleimide and 3,4-bis(1H-indolyl-3-yl-)-N-methyl-maleimide were obtained.

对吲哚在溴乙烷和镁作用下生成吲哚溴化镁，而后与3，4－二溴－N－甲基马来酰亚胺的加成反应进行了研究，合成了2－溴－3－(1H－吲哚－3)－N－甲基马来酰亚胺，并对反应条件进行了改进，研究了反应温度和原料配比对反应的影响。

Quaternary ammonium compound category, ethylene oxide, composite aldehydes, chelating agent, surfactant, the activity factor.

复合季铵盐类、环氧乙烷、复合醛类、螯合剂、表面活性剂、活性因子。

Category quaternary ammonium compound, ethylene oxide, composite aldehydes, chelating agent, surfactant, the activity factor.

复合季铵盐类、环氧乙烷、复合醛类、螯合剂、表面活性剂、活性因子。

Quaternary Ammonium Compound, ethylene oxide, composite aldehydes, chelating agents, surfactants, active factor.

复合季铵盐类、环氧乙烷、复合醛类、螯合剂、表面活性剂、活性因子。

Ethylene oxide, composite aldehydes, quaternary ammonium compound category, surfactant, the activity factor, the chelating agent.

环氧乙烷、复合醛类、复合季铵盐类、表面活性剂、活性因子、螯合剂。

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。