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| Hevea-synthetic/natura (rubber); synthetic natural rubber | |||
| polyisoprene rubber | |||
| poly isoprene rubber | |||
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聚异戊 二 烯橡胶 : 8 phrases in 4 subjects |
| Oil / petroleum | 4 |
| Polymers | 2 |
| Shipbuilding | 1 |
| Technology | 1 |
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