查询词典 ethylene

Carbinol, ethylene, propylene, and benzene are called one of four basic organic chemical raw materials.

甲醇、乙烯、丙烯和苯被称为四大基本有机化工原料之一。

SOTCO deals with 103 kinds of petrochemical and oil products including Carbolic Acid, Ethylene glycol, Butylether, and Andtetrachloromethane, etc.

我司可操作包括苯酚、乙二醇丁醚和四氯化碳等6类毒害品在内的103个品种，经营种类包括

It is noted to that this binuclear nickel complex is able to catalyze ethylene polymerization as single-component catalyst.

值得注意的是，该化合物可以作为单组份催化剂催化乙烯聚合。

The research is to discuss the effect of the different storage temperature, concentration of sucrose and application of ethylene on the senescence of the cattleya cut flower. The senescence symptom appeared in the cattleya cut flower in the vase at 25℃at 4th day, complete senescence happened at 5th day and lost the ornamental value .

本研究探讨不同贮藏温度、蔗糖浓度及外加乙烯对嘉德丽雅兰切花花朵老化之影响，嘉德丽雅兰切花於25℃下瓶插第4天花朵已开始出现老化症状，第5天花朵已完全老化且失去观赏价值。

The synthesis method comprises the following steps: adding 2-( 5-(dimethylamino methyl- 2- furyl methyl sulpho ethylamine and 1- methylthio- 1- methylamino- 2- nitro ethylene with a molar ratio of 1.04: 1 into water, heating to 48- 52 Deg. C, reacting 4.5 hours with a vacuum degree of 0.02- 0.05 MPa, cooling, adding sodium-hydroxide of concentration of 10% to regulate the PH value to 11.0- 11.4, filtrating and cooling the filtrate to 0- 2 Deg. C, crystallizing for 12 hours, centrifugally filtrating, and rinsing filter cake with purity water to prepare wet ranitidine alkali; dissolving ranitidine alkali in alcohol and reacting with chlorhydric acid to prepare ranitidine hydrochloride.

合成方法包括：将摩尔比为1.04∶1的2-(5-(二甲氨基甲基-2-呋喃基甲基硫代乙胺与1-甲硫基-1-甲胺基-2-硝基乙烯加入水中，升温至48-52℃，于真空度0.02～0.05MPa反应4.5小时，反应完毕降温，用10％氢氧化钠溶液调pH＝11.0-11.4，抽滤，滤液降温至0～2℃，结晶12小时，离心甩滤，用纯化水漂洗滤饼，得雷尼替丁碱湿品；将雷尼替丁碱溶于乙醇中与盐酸反应，制备得到盐酸雷尼替丁，产品符合欧洲药典标准。

The development of production technology at home and abroad of ethylene dichloride and vinyl chloride monomer were discussed.

评述了二氯乙烷和氯乙烯单体生产技术的国内外进展，剖析了世界和中国的市场现状和前景。

The correct factor in metronidazole which is free of ethylene oxide,chloroform was used as internal standard.

用模拟基质进行校正因子的测定，以氯仿为内标测定甲硝唑中的环氧乙烷。

The side-chain liquid crystal polymacrylate was synthesized by free radical polymerization form the acrylate monomer which was generated from p-hydroxy benzoic acid, ethylene chlorohydrin and acrylic acid by etherification, esterification and chloration.

以对羟基苯甲酸、氯乙醇和丙烯酸为主要原料，经醚化、酯化和酰氯化反应合成了中间体和含液晶基元的丙烯酸酯单体，后者经自由基聚合合成了聚丙烯酸酯侧链液晶聚合物。

The outlets of methane tetrachloride produced in the production facilities of chloromethane in China at present were proposed,such as conversion to diphenyl ketone ,ethylene tetrachloride,cinnamic acid,trichloroacetyl chloride,methane chloride and chloroform.

提出了目前我国氯甲烷生产装置副产的四氯化碳的出路：转化成二苯甲酮、四氯乙烯、肉桂酸、三氯乙酰氯、一氯甲烷、氯仿。

By application in one large ethylene engineering,it was demonstrated that the welding procedure of chrome molybdenum alloy steel was right and rational,at a greater degree,it improved the welding quality and decreased defects in the welding process.

通过在某大型乙烯工程施工中的实际应用，验证了此铬钼合金钢焊接工艺是正确合理的，能够较大程度提高管道焊接质量，减少焊接时各种缺陷的产生。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。