查询词典 polystyrene

Asbestus, Dry ice, Material infectants, Lifesaving facilities, gas engines, Polystyrene, Automatic vehicles, Chlorite, Remote control toys, Magnetic materials, Electronic wheelchairs, etc,.

常见的有石棉、干冰、环境污染物、救生设备、装有内燃机的机械设备、聚苯乙烯珠粒料、自带动力的交通工具、二亚硫酸锌、遥控玩具、磁性物质、电动轮椅等。

In study of ICF, polystyrene hollow micro-spheres are one of the most important targets because of its low density and atomic number.

在ICF 靶丸研究中，PS空心微球是主要的靶型之一，由于PS 靶具有低密度、低原子序数，可以降低辐射驱动内爆实验过程中燃料预热及流体力学不稳定性，提高实验效率，并且有利于实验过程中诊断，所以PS 靶愈来愈受到重视并很快得以发展。

Coral colonies in this cove. But it's hardly a paradise, especially as the tideline may be dotted with polystyrene and other rubbish.

那里有很细小的珊瑚群，但在岸边有零星的聚苯乙烯及其他垃圾。

Around 83 % benzene ring of polystyrene was sulfonated according to the analysis of infrared spectra.

用红外光谱仪分析得到，SSPS树脂中约83%的苯环接上了磺酸基。

In order to modify the dense of the hydrophilic groups of the superabsorbents, as well as reutilize wast polymer , a rigid and hydrophobic polystyrene chain have been introduced into the superabsorbent, and novel superabsorbent nanocomposites based on partially neutralized acrylic acid, waste polystyrene foam and sodium type montmorillonite powder have been synthesized. The properties of the superabsorbents, effects of various main factors on water absorbency have been systemically investigated. The structure, surface morphology and thermal stability of the composites were characterized by FTIR, XRD, SEM and thermo gravimetric analysis.

为了改善高吸水性树脂亲水基团的密度，同时以废塑料资源化再利用为目的，将刚性、疏水的聚苯乙烯引入到高吸水性树脂中，成功制备了废旧聚苯乙烯泡沫/丙烯酸/蒙脱土高吸水性树脂，并对所制备的高吸水性树脂的各项性能、吸水倍率的诸影响因素进行了系统讨论研究，同时也通过FTIR、XRD、SEM、热重分析等物理手段来表征复合高吸水性树脂的结构、表面形貌、热力学稳定性等性能。

Said invention utilizes the control of sulfonation extent of polystyrene sulfoacid membrane and distribution of sulfoacid group to implement modification or polystyrene sulfoacid membrane, on the primise of that the protein conductivity of the membrane is not affected, the permeability of the methyl alcohol in the membrane is reduced, and the alcohol-resistance of membrane material is raised.

通过控制聚苯乙烯磺酸膜的磺化程度和磺酸基团的分布状况来对聚苯乙烯磺酸膜进行改性，在不影响膜的质子传导性能的前提下，降低了甲醇在膜内的渗透率，提高了膜材料的阻醇性能。

The present invention uses industrial polystyrene as raw material, under the protection of inert gas uses complex of acidylating agent and concentrated sulfuric acid as sulfonating agent to make sulfonation, and utilizes dector-blade casting process or other membrane-forming process to prepare polystyrene sulfoacid membrane with low sulfonation degree.

本发明涉及电化学的燃料电池技术，更具体是指低温直接甲醇燃料电池用聚苯乙烯磺酸膜及其制备方法。本发明是以工业级的聚苯乙烯为原料，在惰性气体保护下以酰化剂与浓硫酸的络合物作磺化剂，进行磺化，并通过流延法或者其它成膜方法制备低磺化度的聚苯乙烯磺酸膜。

Treatment of polystyrene-supported selenium ,bromide with lithium acetylides afforded polystyrene-supported selenoacetylene, which reacted with dicyclohexylborane giving a way for stereoselective synthesis of polymer-supported- vinylic selenides .

聚苯乙烯负载硒溴与炔基锂反应合成聚苯乙烯负载炔基硒醚，再与二环己基硼烷反应制得聚苯乙烯负载顺式烯基硒醚；此负载型烯基硒醚在NiCl2(PPh3)2存在下与格氏试剂发生偶联反应，提供了一种有效的-1，2-二取代乙烯的固相有机合成方法

In a chemical oxidative seeded polymerization system of aniline using the polystyrene seed particles pretreated by emulsifier or modified by copolymerizing with acrylic acid, colloidally stable core-shell polystyrene/polyaniline composite particles were prepared.

在苯胺的化学氧化种子聚合体系中，以乳化剂预处理和与丙烯酸共聚改性的聚苯乙烯粒子为种子，制备具有一定分散稳定性的聚苯乙烯／聚苯胺核－壳型复合高分子粒子乳液。

The results show that a proper air - entraining agent to be added not only can increase strength of cement polystyrene board effectively, but also decrease its density. The fly ash to be used instead of part of cement can save cement consumption and lower production cost under the prerequisite to ensure the property of cement polystyrene board.

结果表明：适量引气剂的加入不仅可有效提高水泥聚苯板强度，还可降低密度；采用粉煤灰代替部分水泥可以在基本保证水泥聚苯板性能的前提下，节省水泥用量，降低生产成本。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新