乙烯

The material of polyvinyl acetate is adopted, and combinations of axial strain rate and pressure under various temperatures were considered in the analysis of the thermoviscoelastic response.

本文选用材料为聚醋酸乙烯酯或简称PVAC，进行分析温度变化下承受轴向应变率及常围压，并藉不同之组合，以探讨高分子材料热黏弹反应。

A review is made of the history, current research situation and modification methods of wood adhesives in China, placing emphasis on three traditional types of formaldehyde-based resin wood adhesive and polyvinyl acetate emulsion used in panels second processing and furniture production, The development trend of wood adhesives in China is also summarized.

介绍了木工用胶粘剂发展的历史和研究现状及改性方法，重点是综合了传统木工用三种甲醛类胶粘剂和人造板二次加工及家具生产用聚乙酸乙烯酯乳液胶的研究进展，同时提出了木工胶粘剂的发展趋势。

This paper delivered the relationships of uniaxial tensile and compressive stress with strain and bending properties,and felt－bending strength of cement mortar with polyvinyl acetate.

研究掺聚醋酸乙烯水泥砂浆的轴拉和轴压应力—应变关系、抗弯性能以及长期粘结抗弯强度。

Polyvinyl acetate resin was prepared by suspension polymerization, and modified to carboxymethylated polyvinyl alcohol resin after several steps of reaction.

以悬浮聚合方法合成大孔聚醋酸乙烯酯树脂，通过一系列反应修饰成弱酸性阳离子交换树脂，表征了树脂的性能。

The surface hydroxyl group onto magnetic polyvinyl acetate nanoparticles can be obtained by saponification reaction on their surface.

结果表明，磁性聚苯乙烯颗粒与丁二酸酐发生Freidel-Crafts酰基化反应，可以在颗粒表面引入少量羧基；磁性聚甲基丙烯酸甲酯颗粒分别与乙二醇、二缩三乙二醇、聚乙二醇等发生醇-酯交换反应，可以在颗粒表面接枝不同分子链长度的末端羟基；磁性聚醋酸乙烯酯颗粒经过醇解或皂化反应可以获得表面羟基；磁性聚丙烯酸甲酯颗粒通过乙二胺或1，6己二胺的胺解反应可以得到表面氨基，继而与一氯乙酸反应可以引入亚胺二乙酸基团。

Test results show that, with the addition of polyvinyl acetate, the compressive strength and compressive modulus of mortar decrease distinctly, but the ultimate strain increases significantly. The uniaxial tensile strength and bending strength increase a little, but the tensile peak-strain and the ratio of tensile-compressive and bending-compressive increase remarkably.

试验结果表明，随着聚醋酸乙烯的掺入，砂浆的轴压强度和弹性模量显著下降，但极限应变却明显增大；砂浆的轴拉强度和抗弯强度均略有提高，而极限应变、拉压强度比和弯压强度比则显著增加。

The corrugated paper honeycomb sandwich was fabricated with corrugated paperboard of different flute and base weight using polyvinyl acetate emulsion,and impact test was carried out to study their dynamic performance.

比较了瓦楞结构蜂窝夹层和普通蜂窝夹层用纸量的差别，用聚醋酸乙烯酯乳液作为黏合剂，使用不同楞型和定量的瓦楞纸板制得瓦楞结构蜂窝夹层，利用冲击实验机研究其动态性能。

These chemicals are commonly used to make vinyl plastic, otherwise known as polyvinyl chloride or PVC.

这些化学物质主要的功用是作为乙烯基塑胶中的增塑剂，以作为软化塑胶之用。

Designating any of a group of polymerized thermoplastic vinyls,such as polyvinyl chloride.

聚乙烯基的表示一组聚合的热塑性乙烯基中任一种的，如聚氯乙烯

The status of supply and demand of vinyl chloride monomer and polyvinyl chloride resin at home and abroad was analyzed and the trends in future was predicted.

分析了国内外氯乙烯单体和聚氯乙烯树脂的供需状况，预测了未来几年的发展趋势，对我国聚氯乙烯工业的发展提出了建议。

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。