查询词典 sulfur ether

I. engine was modified to dimethyl ether homogeneous charge compression ignition combustion.

在一台2135型柴油机上实现了纯DME的均质充量压缩燃烧方式。

In this paper, an experimental study on combustion and emission characteristics of homogenous charge compression ignition combustion engines using n-heptane combined with methyl tertiarybutyl ether was conducted.

研究了含甲基叔丁基醚的正庚烷HCCI燃烧特性和排放影响因素。

The direct self-condensation of the ABB' intermediates prepared was carried out under three different conditions including (1)25C/DBOP-TEA (2) 110/TPP-Py (3) 200 oC to form three hyper-branched poly ether imides.

藉由所制备ABB，分歧状新中间体，本研究进行三种自身聚缩合的探讨，包括下列三种不同状况：(1)常温/DBOP-TEA (2) 100oC/TPP-Py 及(3) 200 oC ，制得三类型分歧状聚醚亚醯胺高分子。

All of the three ether imides synthesized exhibited low inherent viscosity, high thermal stability of 456 to 499 oC in TGA measurement (5wt% loss/N2) with Tgs between 240 ~254 oC. They also show good solubility behaviors in N-methyl-2- pyrrolidinone, dimethyl sufloxide, dimethyl formamide, chloroform, and m-cresol.

所得聚醚亚醯胺高分子皆具如下相同之优点如：包括低固有黏度表现，其热性质上也具高隐定性，其TGA在氮气5 wt %重量损失测定可达456 ~ 499 ℃，其玻璃转移温度达240 ~ 254 ℃，在溶解度方面，它们皆可溶解於高极性有机溶剂如： NMP、DMSO、DMF，亦可溶於中极性之溶剂如CHCl3、m-cresol。

With regard to anion exchange membranes,the traditional preparation method involves a much complicated process—chloromethylation,in which the commonly used chloromethyl methyl ether and bis-chloromethylether are now considered carcinogens.Therefore,it is necessary to develop new routes to prepare anion exchange membranes without such chloromethylation process.As for cation exchange membranes, mostly-perfluorinated sulfonic acid ionomers,such as Nafion~?

对于强碱性的阴离子交换膜的制备，由于传统路线中的卤甲基化步骤中不可避免的采用强致癌物质二氯甲醚，因此无论是从经济成本还是环境保护方面，开发不采用氯甲基化步骤的阴离子交换膜制备方法是目前的一个迫切要求。

The trace amount of impurities,namely C5,tert-butyl alcohol,di-secondary butyl ether,methyl ethyl ketone and secondary butyl alcohol,in C4 hydrocarbon from butylene hydration tail gas were analysed by means of gas chromatograph with a column packed with sebaconitrile and polyethylene glycol-20M,and liquid-phase admission valve.

2m×4mm为填充柱，采用液相进样阀液态直接进样的填充柱气相色谱法分析了丁烯水合尾气C4烃中的C5、叔丁醇、二仲丁醚、甲乙酮及仲丁醇等微量杂质的含量。

And the suitable conditions were concentrated the alcohol immersing liquor after the rose had been immersed 24 hours.3.Ether and ligroin were used respectively to extract rose concentrated fluid.

在有机溶剂制取玫瑰浸膏工艺的中，分别使用乙醚、石油醚对玫瑰浓缩液萃取，分液后浓缩成浸膏，结果显示，石油醚制取浸膏得率为1‰，而乙醚得率为3‰。

The active ingredients in shark liver oil have been found to be a group of ether-linked glycerols known as alkylglycerols.

鲨鱼肝油的有效活性成分，被发现是一组称为alkylglycerols的甘油酯。

Results: The polymer taking MAA as functional monomer and acetic ether as solvent obtained higher selectivity for desloratadine.

结果：研究表明，采用MAA为功能单体，以乙酸乙酯做溶剂合成的地氯雷他定MIP对模板分子的结合性最佳。

By using polymerizable surfactants, the stability of the latex and water resistance of the film can be improved. Sodium monoalkyl maleates polymerizable surfactants, sodium monoalkylpolyoxyethylene maleates polymerizable surfactants and N-methyl-N-monododecylfumaroyl taurine polymerizable surfactants are synthesized, by using normal fatty alcohols, alkyl poly ether and maleic anhydride.

以直链脂肪醇、脂肪醇聚氧乙烯醚和马来酸酐为起始原料，设计合成了马来酸单脂肪醇酯钠盐A系列、马来酸单脂肪醇聚氧乙烯醚酯钠盐B系列、N-甲基-N-脂肪醇单酯富马酰基-牛磺酸钠D系列的可聚合乳化剂。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。