1·Nitrile is a copolymer of butadiene and acrylonitrile.
腈是一种丁二烯与丙烯腈的共聚物。
2·A type of thermoplastic synthetic copolymer composed of various proportions of styrene, acrylonitrile and butadiene.
由各种比例苯乙烯、丙烯腈和丁二烯组成的一类热塑性合成共聚物。
3·Regression results showed that reaction time, pressure and composition of feed gas had marked effects on mass fraction of xylene soluble part and ethylene content in copolymer.
实验结果表明，反应压力、反应时间、原料气中乙烯含量对共聚物中的乙烯含量、二甲苯可溶物含量有显著影响；
4·The research progress in the preparation, analysis and application of the copolymer poly-dimethyldiallylammonium chloride-acrylamide(PDA)was reviewed in this paper.
对二甲基二烯丙基氯化铵与丙烯酰胺的共聚物PDA在合成、分析和应用方面的研究进展进行了综述。
5·The results show that: 1 The branch distribution is an important factor in determining the crystallinity of the copolymer.
结果表明：1 支链分布是影响共聚物结晶的重要因素。