苯乙烯

The results show that the thermal degradation process of polystyrene initiates from chain end scission, and styrene dimer is the residual of degradation of polystyrene; Different catalysts have different catalytic activity on the degradation process of polystyrene, among which barium oxide is the best.

作者利用热重质谱法对聚苯乙烯热降解和催化降解过程进行了研究，得出以下结论，聚苯乙烯的热降解过程主要由链端断链反应引发，苯乙烯二聚体可能是聚苯乙烯降解结束阶段的剩余物；不同催化剂在聚苯乙烯降解过程中具有不同的催化活性，其中氧化钡的催化活性最高。

A novel label adhesive with good performance for labeling beer bottle was prepared by using acrylic acid,styrene, butyl acrylate as functional monomers grafted to polyvinyl alcohol by emulsion polymerization,neutralizing carboxyl with NaOH and ZnO.

通过乳液聚合把丙烯酸、苯乙烯、丙烯酸丁酯单体接枝到聚乙烯醇上，用ZnO和NaOH中和增稠，制备了一种综合性能优良的新型啤酒贴标粘合剂。

As superplasticizer , a series of comb-shaped copolymers of polycarboxylic acid were synthesized by polyoxyethylene allyl methyl diether, maleic anhydride, and styrene with different initiators,and esterified with PEO-n.

以聚氧乙烯甲基烯丙基二醚、顺丁烯二酸酐、苯乙烯等为共聚单体，采用不同引发剂，合成了一系列聚羧酸型梳状共聚物超分散剂，并以PEO n单酯化得酯化产物，研究了共聚物的结构、组成、添加量等对水泥粒子分散性能的影响。

Wedgeplug O-Seal plug valves with their positive, no-leak features are not only recommended as the best general purpose valves for handling hydrocarbons, vegetable oils, solvents, etc., but are ideal for such tough service as butane, propane, butadiene, acetone, ethyl alcohol, ammonia, anhydrous ammonia, benzene, vinyl chloride, dry chlorine, Dowtherm, ethane, ethylene, hydrogen chloride, napthalene, oxygen, hydrogen, phthalic anhydride, dry phosgene, phosphoric acid, potassium carbonate, styrene, molten sulphur, sulphur dichloride and related services within a temperature range from -300oF to + 450oF within pressure limits of the valves.

楔塞O形密封旋塞阀具有积极的、无泄漏特性，不但是最好的通用的阀门，用于处理碳化氢，植物油，溶剂等，还特别适用于严酷的应用环境，如丁烷，丙烷，丁二烯，丙酮，乙醇，氨，无水氨，苯，氯乙烯，干氯，道氏热载体，乙烷，乙烯，氯化氢，萘，氧，氢，邻苯二甲酸酐，干碳酰氯，磷酸，碳酸钾，苯乙烯，融化硫，二氯化硫，以及温度在-184oC至232oC之间，压力在阀门额定压力等级范围内的有关应用。

I used Styrene Solid rod and brass rod to manufacture the Single Bollards.

我用苯乙烯坚实的控制棒和黄铜棒制造的单一护柱。

It is identified that the peak at -2.45V is styrene or naphthalene, and the peak at -2.80V is conjugated dienes.

分析表明-2.45V处的峰来自苯乙烯或萘，-2.80V处为共轭二烯烃的特征峰。

The morphology of thermoplastic elastomers based on styrenic block copolymers was investigated by atomic force microscope in this paper.

本文以原子力显微镜对苯乙烯类热塑性弹性体的聚集态形貌进行研究。

The results suggest that the conversion and selectivity of styrene epoxide are significantly influenced by the calcination temperature and Au loadings.

结果表明，催化剂的焙烧温度、金担载量对苯乙烯环氧化反应有较大影响。

The aerobic oxidation of styrene to its epoxide catalysted by Salen-Mn complex was studied.

研究了Salen-Mn配合物催化空气环氧化苯乙烯的反应。

It was slump-molded styrene over a fibreglass body mold that had been sent over with one of the costume shipments and discarded.

它是用凹模法在一个玻璃纤维模体上喷涂苯乙烯，模体是和一批服装货物一起送来的，然后被我废物利用了。

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。