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| 聚均苯四甲酰亚胺 | |||
| 聚均苯四酰亚胺 | |||
| 聚均苯四甲酰亚胺 | |||
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polypyromellitimide : 2 phrases in 2 subjects |
| Polymers | 1 |
| Textile industry | 1 |
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