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bian yi zhe de hua
Pages: 4
Year: Issue:  1
Journal: World Plastics

Keyword:  聚烯烃塑料石油化学工业六十年代二十年七十年聚丙烯大规模生产聚乙烯塑料工业编译;
Abstract: <正> 由于石油化学工业的迅速发展,经过六十年代和七十年代,二十年来,以聚乙烯和聚丙烯为主所构成的聚烯烃大规模生产,其产量占塑料总产量三分之一以上,而且其比重继续增加,可见其在塑料工业中的地位之重要,我
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