Three Yuan second grade third rubbers (EPDM) is the ethylene, the propylene and the few non-conjugate diolefin copolymer.
三元
丙橡胶（EPDM）
、丙和少
非共轭二烃
共聚物。
Three Yuan second grade third rubbers (EPDM) is the ethylene, the propylene and the few non-conjugate diolefin copolymer.
三元丙橡胶（EPDM）、丙和少非共轭二烃共聚物。
The diolefins and alkenyl aromatics are very unstable components which can give gums by polymerization.In giving olefins and alky aromatics the hydrogenation improves the product quality.
二烃和基芳烃非常不稳定组分，可聚合产生凝胶。对于给定烃和烷基芳烃，氢化可以改善产品质。
：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件
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