乙烯

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。

Propyleneoxide is produced with chlorohydrin method or Halcon method which gives rise toenvironmental pollution or a large amount of co-product.

是最洁净、廉价的氧源，但工业上除乙烯外，其它环氧化合物还不能通过〓直接高选择性环氧化相应的烯烃制得。

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。

This invention discloses an intermolecular charge transfer chromogen with triphenylamine group, with a formula indicated by (1), wherein: R1 is hydrogen atom or methyl group or methoxyl group, R2 is hydrogen atom or 2-(5,5-dimethyl-3-vinylcyclohexenyl-2-enylidene)propanedinitrile group.

本发明公开的含三苯胺基团的分子内电荷转移生色团，具有式1所示的结构式，其中R 1 为氢原子或甲基或甲氧基，R 2 为氢原子或2-(5，5-二甲基-3-乙烯环己烯基-2-烯亚基)丙二腈基。

His heart sank when he came home from work one day, and it was clad in grey vinyl siding.

他的心沉没时，他下班回家一天，这是身着灰色乙烯基侧板。

If you have a wood or clapboard exterior to your home, give serious consideration to installing vinyl siding over it, as this can add up to $10,000 to the value of your home.

如果你有一个木隔板外观还是你的家，认真考虑了它偏袒乙烯装置、由于这已达10000家你的价值。

Embryonic development: Cloaca malformation and ARM rats were produced by treating with administration of ETU on pregnant rats.

①胚胎发育：用乙烯硫脲致畸孕鼠产生泄殖腔畸形和无肛畸形胎鼠。

As references, conventional surfactant sodium dodecylsulfate or the mixture of surfactants sodium dodecylsulfate and nonylphenol polyoxyethylene ether (10) is used in the same polymer systems. Large amount of coagulum is producted during the polymerization, when the polymerizable surfactant from series A is used.

传统乳化剂十二烷基硫酸钠或十二烷基硫酸钠与壬基酚聚氧乙烯醚(10)(NP-10)复配的乳化剂也同样用于聚合以作对比。A系列乳化剂产品产生了大量凝胶，不适宜用于本文研究的乳液聚合中。

We have successfully modified coal tar pitch with divinylbenzene in this paper.

进行了二乙烯基苯改性煤沥青的中间相转化行为研究。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。