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| polymeric precursor | |||
| preformed polymer; prepolymer | |||
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| preformed polymer; prepolymer | |||
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预 聚物 : 39 phrases in 7 subjects |
| Chemistry | 3 |
| General | 1 |
| Oil / petroleum | 1 |
| Plastics | 15 |
| Polymers | 15 |
| Space | 1 |
| Technology | 3 |
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