The random copolymerization of propylene and ethylene with a supported titanium contained Ziegler-Natta catalyst has been studied.
以载体型钛系齐格勒-纳塔催化剂进行了丙烯和乙烯无规共聚合的研究。
The invention relates to a while random copolymerization polypropylene (PP-R) light resistant pipe which comprises a white (PP-R) water pipe.
本发明涉及一种白色无规共聚聚丙烯阻光管。
The above results suggest that hair melanin iss complex random polymer, formed by a very complicated process of oxidation and copolymerization of both sulfur-containing and non-sulfur amino acids.
鉴于上述结果，作者认为头发黑素可能是由不含硫的氨基酸和含硫氨基酸通过复杂的氧化作用和共聚作用生成的无规则聚合物。
The copolymerization for DEDAAC with AM or AA is a non-ideal copolymerization, and the products are random copolymers.
DEDAAC与AM和AA等共聚为非理想共聚，得到的产物均为无规共聚物。
The copolymerization for DEDAAC with AM or AA is a non-ideal copolymerization, and the products are random copolymers.
DEDAAC与AM和AA等共聚为非理想共聚，得到的产物均为无规共聚物。
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