甲基

A pair of optical isomerism amphiphlic molecules L-C10HLN-(4-decaoxygen-2-hydroxybenzene methylene-L-leucine and D-C10HLN-(4-decaoxygen-2-hydroxybenzene methylene-D-leucine were synthesized.

製备了一对旋光异构的两亲分子L-C10HL（N-（4-癸氧基-2-羥基苯亚甲基）-L-亮氨酸）和D-C10HL（N-（4-癸氧基-2-羥基苯亚甲基）-D-亮氨酸）。

The effect of several ions on photocatalytic degradation of methyl orange solution was investigated in detail.

以磷钨酸为光催化剂，在紫外灯照射下，对甲基橙溶液进行光催化降解，考察了几种阴阳离子对磷钨酸光催化降解甲基橙溶液的影响。

This catalyst was used for the photocatalytic degradation of methyl orange.

用该催化剂催化降解甲基橙，研究了催化剂用量、甲基橙的起始浓度、溶液pH 值、光强度、溶液中添加金属离子的影响。

The dehydrogenation of vapor phase methyl isobutyl carbinol to produce methyl isobutyl ketone over a CuO-ZnO-Al2O3 catalyst prepared by co-precipitation method under the atmospheric pressure was studied.

采用共沉淀法制备的铜系CuO/ZnO/Al_2O_3脱氢催化剂，在常压下进行了甲基异丁基甲醇的气相脱氢制备甲基异丁基酮的反应实验。

Acetone is also an important basic organic material, being used in the manufacture of methyl methacrylate, bisphenol A, methyl isobutyl ketone, and also in the production of cellulose acetate tablets, solvents for pla,stics and paints, and the solvent dewaxing for petroleum refining. In 2006, the production ability for phenol was 610,000 tons per year in China, the output was 520,000 tons, and the appearance consumption was 752,000 tons.

丙酮也是重要的基本有机原料，它用于制造甲基丙烯酸甲酯、双酚A、甲基异丁基酮等，用于生产醋酸纤维素片、塑料和涂料的溶剂以及石油炼制的脱蜡溶剂。2006年，我国苯酚生产能力61万吨/年，产量52万吨，表观消费量75.2万吨。

Ethane＞ toluene＞1, 3, 5-trimethylbenzene＞methyl isobutyl ketone＞1, 4-Dioxane＞isoprene＞ 1, 2, 4-trimethylbenzene＞cyclohexane＞1, 3-Butadiene＞methyl butyl ketone were the most reactive VOC species in PRD.

化学活性排名前十位的化合物为：乙烯＞甲苯＞1，3，5-三甲苯＞甲基异丁基酮＞1，4-环氧乙烷＞异戊二烯＞1，2，4-三甲苯＞环己烷＞1，3-丁二烯＞甲基丁基酮。

At the 1995 meeting on the protocol, representatives agreed to phase out the use of methyl bromide in industrialized nations entirely by 2012, and to gradually phase out its use during the 15 years prior to that deadline.

在1995年的关于议定书的会议上，代表们也同意应该在工业国家逐步减少对甲基溴化物的使用，直到2012年完全停止使用，应从1997年开始实现甲基溴化物使用量的下降。

Wood packing materials fumigated with methyl bromide should be accompanied with an official certificate attesting to the treatment.

用溴甲烷熏蒸处理过的木质包装应附有官方证书证明进行了这种处理。假定重叠式的几何形是由一个甲基相对另一个甲基做刚体转动而得。

In this work, methyl methacrylate, epoxy resin and unsaturated polyester resin were modified by industrial bismaleimides and liquid crystalline bismaleimides to increase the thermal stability and mechanical property of the three materials. So the ranges of the three materials useness will be enlarged.

本文采用双马来酰亚胺改性甲基丙烯酸甲酯、环氧树脂和不饱和聚酯树脂，以期提高这三种材料的耐热性能和机械性能，从而拓宽聚甲基丙烯酸甲酯、环氧树脂和不饱和聚酯树脂的应用范围，所以这一课题的研究具有重要的理论和实际意义。

UV curing powder coatings ; acrylic resin ; methacrylic acid ; glycidyl methacrylate ; photosensitive resin

UV固化粉末涂料；丙烯酸树脂；甲基丙烯酸；甲基丙烯酸缩水甘油酯；感光树脂

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。