苯乙烯的

The SAN copolymer generally contains 70 to 80% styrene and 20 to 30% acrylonitrile.

SAN共聚物一般都含有70至80 ％的苯乙烯和20至30 ％的丙烯腈。

The experimental results indicated that their synergistic efficiency depended on the amount of alizarin and β-carotene used.

膨胀计法研究表明Alz和β-C对AIBN引发的苯乙烯自由基聚合有阻滞作用，发现Alz与β-C间存在明显的协同阻、缓聚作用。

The epoxidation of of various olefins was carried out using LDH-F with Mg/Al=5 as the catalyst and H2O2 and benzonitrile as the oxidants. This catalytic system has excellent catalytic activity. The conversion and selectivity are both above 95% when using styrene, indene, allyl alcohol, and allyl chloride as the substrates.

以Mg/Al=5的LDH-F为催化剂，H2O2和苯甲腈为氧化剂对不同官能团化烯烃进行环氧化反应，结果表明，此催化体系具有良好的催化性能，在苯乙烯、茚、丙烯醇和烯丙基氯环氧化反应中转化率和选择性均在95%以上。

Polyketone STCO, a special Ecomaterial, poly (1-oxo-2-phentrimethylene), was prepared by the precipitation copolymerization of CO with ST in the presence of catalysts composed of palladium acetate, bident ligand of 2, 2′-bipyridine, strong acid, p-benzoquinone etc.

利用乙酸钯、含氮双齿配体、强酸、对苯二醌等组成的催化体系催化苯乙烯和一氧化碳的沉淀共聚反应，合成出环境友好材料聚酮STCO—聚（1-氧代-2-苯基丙撑）。

The differences of electric mechanism, phase behavior and high temperature stability of cyhalothrin drug-loading microemulsion were investigated when the dodecyl benzenesulfonic salts combined with five coherer counter-ions and polyoxyethylene styrenyl ether were mixed at the same molar ratio.

将十二烷基苯磺酸盐和苯乙烯化苯酚聚氧乙烯醚按摩尔比1∶1混合后，结合5种金属反离子配成增溶高效氯氟氰菊酯的载药微乳体系，研究其在导电机理、相行为及热贮稳定性上的差异。

Human exposed to styrene may cause chronic diseases of the central nervous system and increase choice reaction time and color confusion index.

人类暴露於苯乙烯环境下将导致神经系统的慢性疾病，像是导致反应时间变长和对颜色辨识的混淆等。

Polystyrene itself is non-toxic, but the residual polystyrene resin polymerization of styrene monomer and some other volatile substances, including ethylene, cumene, toluene, etc., have a certain toxicity.

聚苯乙烯本身是无毒的，但聚苯乙烯树脂聚合残留的单体苯乙烯及其他一些挥发性物质，包括乙烯、异丙苯、甲苯等，有一定毒性。

A new type of difunctional initiator (benzyl dibromide, ethyl dibromoacetate) was proposed in this paper and used to synthesize poly based triblock copolymers such as PSt-PBA-PSt, PMMA-PBA-PMMA.

本论文提出一种新型ATRP双官能团引发剂(如α，α-二溴化苄、α，α-二溴乙酸乙酯)，并用聚合反应速度法、GPC法、核磁分析法进行双官能度的验证，并通过两步聚合合成以聚丙烯酸酯为中间嵌段、苯乙烯或甲基丙烯酸甲酯为两端嵌段的ABA型三嵌段共聚物。

A copolymer emulsion used for air filter paper impregnation was studied, the emulsion was prepared by copolymerization of styrence/bulyl acryl ate and oxidized starch using sodium bisulphate/potassium per sulfate as initiator and sodium doddery sulfate as emulsifier.

摘 要：采用半连续乳液聚合的方法，以亚硫酸氢钠-过硫酸钾为引发剂，十二烷基硫酸钠为乳化剂，合成了一种以氧化淀粉、苯乙烯和丙烯酸丁酯为主要原料的空气滤清器滤纸浸渍乳液。

The emulsoid particle size and its distribution were determined by dynamic laser scattering and TEM. The composition changes of ACR were inspected by IR, and the core-shell structure was observed by TEM.

该共聚物是通过在适度交联的丙烯酸丁酯-丙烯酸2-乙基己酯共聚物乳胶粒外层包裹上一层甲基丙烯酸甲酯-苯乙烯共聚物而形成的。

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。