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| polybenzimidazole; polybenzimidazoles; PBI | |||
| polybenzothiazole | |||
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聚苯 并 咪唑 : 39 phrases in 7 subjects |
| Aviation | 1 |
| Chemistry | 9 |
| Plastics | 1 |
| Polymers | 20 |
| Technology | 1 |
| Textile industry | 6 |
| Water resources | 1 |
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