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| 聚乙烯-丙烯月青共聚物; 氯乙烯一丙烯腈共聚物 | |||
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| 氯乙烯一丙烯腈共聚物 | |||
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vinyl chloride-acrylonitrile copolymers : 3 phrases in 2 subjects |
| General | 1 |
| Plastics | 2 |
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