乙烯

This paper also studied pyrogenation of composites which are made up of three polymer(polyvinylchloride,ethylene-vinyl acetate copolymer and nylon12) and the shell at different temperature through analysed pyrolysis mechanism.The study shows:the calcined shell has different effect on resin at different temperature, nylon 12 having amido and shell calcined for two hours at 600℃ can form the material which has resemblance in the structure of shell,so the pyrolysis speed of this composite is slower than pure nylonl2,but the effect is unideal.

通过分析聚合物的热降解机理，研究了三种聚合物(聚氯乙稀、乙烯—醋酸乙烯共聚物和尼龙12)与不同温度下贝壳组成的复合材料的热降解行为，结果发现：不同温度下煅烧的贝壳对树脂的影响不同，其中具有氨基的尼龙12与600℃煅烧2小时的贝壳可以形成类似贝壳结构的材料，所以这种复合材料比纯尼龙12的热降解速度慢，但效果不理想。

For the veneering with 0.3mm thick veneer over a graduated particleboard, the optimum processing conditions were a UF adhesive level at 78g/m~2 over the board, a PVAC adhesive level at 42g/m~2 over the veneers and 4.6 percent 36％ HCL ...

用0.3mm厚的水曲柳薄木对渐变结构刨花板饰面时，其最佳工艺条件为：脲醛树脂胶在刨花板上的涂胶量为78g/m~2，聚醋酸乙烯酯乳液在薄木上的涂胶量为42g/m~2，38％盐酸用量为聚醋酸乙烯酯乳液重量的4.6％。

OBJECTIVE: To observe the therapeutic efficacy of the new type of membrane plasma separator Evacure-4A prepared by ethylene vinyl alcohol copolymer on severe hepatitis patients, in addition, to compare the results versus that of PS-06 membrane plasma separator.

目的：观察由乙烯、乙烯醇共聚物制备的新型膜型血浆分离器Evacure-4A(EC-4A)治疗重型肝炎的临床疗效，并与由聚乙烯磺基制备的PS-06膜型血浆分离器进行对比分析。

Scrap material having both a thermoplastic polyurethane and a copolymer of ethylene and vinyl alcohol is recycled by blending the scrap material into a thermoplastic polyurethane composition and preparing a barrier membrane from the blended material.

通过将废料共混入热塑性聚氨酯组合物，并从该共混的材料制备屏蔽隔膜，从而使含有热塑性聚氨酯和乙烯与乙烯醇共聚物的废料再生。

Superparamagnetic iron oxide nanoparticles were coated with either Polyvinyl alcohol or Vinyl alcohol/vinyl amine copolymer and further functionalized with the fluorochromes Cy3.5 or Texas Red.

将超顺磁性三氧化二铁纳米颗粒用聚乙烯醇或乙烯醇/乙烯胺共聚物包被后，再用荧光染料Cy3.5或德克萨斯红染料进一步功能化。

PVA coated and fluorescent dye (Cy3.5) functionalized vinyl alcohol/vinyl amine copolymer coated superparamagnetic iron oxide nanoparticles were evaluated for systemic distribution and elimination after intraarticular injection in sheep.

本文首先以PVA和标记有荧光染料Cy3.5的乙烯醇/乙烯胺共聚物修饰超顺磁性氧化铁纳米颗粒，再将其通过关节注射到绵羊体内，然后对其分布及排泄进行了评估。

The crystallization behavior and crystals structures of copoly (vinylidene fluoride-chlorotrifluoroethylene), which was synthesized with n: n=1: 4, were investigated by DSC, WAXD and FTIR, respectively.

用示差扫描量热法、广角X射线衍射和傅里叶红外光谱研究了偏氟乙烯／三氟氯乙烯单体摩尔比为1： 4的无规共聚物的结晶与晶体结构。

The absorption characteristics and the structure at (0,0,1) plane of the 1,3,5-triamino-2,4,6-trinitrobenzene crystals of alternative copoly(vinylidene fluoride-chlorotrifluoroethylene) with various degree of polymerization has been studied by molecular dynamics simulations using compass forcefield and NVT ensemble model.

采用COMPASS力场和NVT正则系综的动力学模拟方法，搭建了聚合度分别为10， 50和100的偏氟乙烯/三氟氯乙烯交替共聚物，对交替共聚物在1，3，5-三氨基-2，4，6-三硝基苯的(0，0，1)晶面上的吸附和结构进行了分子动力学模拟。

Polyvinylidene Fluoride is polymerized from Vinylidene Fluoride, it owns outstanding characteristics of high mechanical intensity, good radiation resistance.

聚偏氟乙烯是由偏氟乙烯聚合制得，简称PVDF。

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。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。