乙烯的

Modification of fluorocarbon resin 246 (Copolymer of vinylidene fluoride－tetrafluoroethylene－hexafluoropropylene) with epoxy resin will improve the adhesion of fluorocarbon resin on metal surface.

摘 要：用环氧树脂改性偏二氟乙烯－四氟乙烯－六氟丙烯共聚物(氟树脂246)，可以大大提高氟树脂在金属底材表面的附著力。

The polyacrylate-/vinylidene chloride/nanomontmorillonite Composite emulsion was prepared by seed emulsion polymerization.The influence of the content of nanomontmorillonite on composite emulsion diameter ,mechanical properties and thermal stability is probed.

以偏二氯乙烯和蒙脱土作改性剂，采用种子乳液聚合方法制备了聚丙烯酸酯偏二氯乙烯/蒙脱土共聚物复合乳液，研究了蒙脱土质量分数对共聚物乳胶粒径、乳胶膜抗拉强度与断裂伸长率及热稳定性的影响。

The pure isomers 3-(1-hydroxyethyl)-8-vinyldeuteroporphyrin Ⅸ and 3-vinyl-8-(1-hydroxyethyl)deuteroporphyrin Ⅸ were obtained from protoporphyrin Ⅸ dimethyl ester.Starting from these two acetylating compounds,eight new porphyrin derivatives were synthesized through an alkyloxy fission reaction.

以原卟啉Ⅸ二甲酯为起始原料，合成并分离得到3-(1-羟乙基)-8-乙烯基次卟啉Ⅸ（Ⅱ1）和3-乙烯基-8-(1-羟乙基)次卟啉Ⅸ（Ⅱ2）二个异构体，两者分别经酰化后与醇进行烷氧裂解反应合成了8个全新的卟啉衍生物。

The trifluoroethylester silane was synthesized by modifying a PEG diacid to form the corresponding bistrifluoroethylester, followed by a reaction with 3-aminopropyltriethoxysilane.

通过用PEG二酸修饰合成三氟乙基乙烯醚硅烷，由此形成相应的双丙烯酰胺三氟乙基乙烯醚，再将其与3-APS相互作用。

By using lead ion as the template molecule, sodium vinylbenzoic- acid as the functional monomer and divinyl benzene as the cross-linking monomer, lead molecularly imprinted polymers were synthesized by preassembling and surface-imprinting technology.

以对乙烯基苯甲酸钠为功能单体，铅离子为模板分子，对乙烯基苯为交联剂，采用预组装方法结合表面印迹技术合成得到铅的分子印迹聚合物。

For the stepwise mechanism, the ethylene molecule was firstly adsorbed at the Brnsted acid site via π-hydrogen bonding to form a stable complex, which then went through the protonation, leading to the formation of the ethoxide intermediate. Furthermore, the ethoxide reacted with the second ethylene molecule to form the butoxide product.

对于分步反应机理，乙烯分子首先通过π-氢键作用在酸性位形成稳定的吸附络合物，再进一步发生质子化并生成乙醇盐中间体，随后乙醇盐与第二个乙烯分子发生碳－碳键结合形成丁醇盐产物。

Activity-stability experiment for the liquid phase alkylation of benzene with ethylene was proceeded for 2000hrs, the average values of ethylene conversion, ethyl-benzene selectivity and ethylation selectivity were 100%, 94.5% and 99.0% respectively.

进行了苯和乙烯液相烷基化的2 000 h 活性稳定性试验，乙烯转化率、乙苯选择性、乙基化选择性分别平均为100%、94.5%和99.0%。

In some areas, the risk levels of carbon trichloride, hexachlorobutadiene, carbon tetrachloride, chlorylene, tetracarp, trichloroethane , chloroform, gammexane and other pollutants all exceed 10-4, all above the harm value of 1, and these pollutants are likely to cause risks to human health.

而少数区域的六氯乙烷、六氯丁二烯、四氯化碳、三氯乙烯、四氯乙烯、1，1，2-三氯乙烷、氯仿和六六六等污染物风险等级均大于10-4，危害商均大于1，这些污染物均能对人体健康产生风险。

Binary blends of polyoxymethylene/co-polyamide and ternary blends of poly- oxymethylene/co-polyamide/ethylene-vinyl (POM/COPA/EVA) were prepared and the effect of COPA and EVA contents on properties of blends was investigated.

研究了聚甲醛/共聚酰胺二元及聚甲醛/共聚酰胺/乙烯-醋酸乙烯酯共聚物(POM/COPA/EVA)三元共混物，探讨了COPA、EVA用量对共混体系性能的影响。

The manufacturing technology of cold stretched and hot shrinkable PTFE products will find wide applications for PTFE material.

冷拉伸、热收缩聚四氟乙烯制品成型技术为聚四氟乙烯材料的进一步推广应用拓展了空间。

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。