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| 合成橡胶 | |||
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| 共聚型橡胶 | |||
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copolymer rubber : 9 phrases in 6 subjects |
| Automobiles | 1 |
| Business | 1 |
| Chemistry | 2 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Polymers | 2 |
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