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| 聚苯并咪哩 | |||
| 聚苯并咪唑 | |||
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| 聚苯并咪唑 | |||
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polybenzimidazole : 18 phrases in 6 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Plastics | 1 |
| Polymers | 10 |
| Technology | 1 |
| Textile industry | 4 |
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