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| 丁二烯一异戊二烯共聚物 | |||
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| 二烯-异戊二烯共聚物 | |||
| 丁二烯一异戊二烯共聚物 | |||
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butadiene-isoprene copolymer : 1 phrase in 1 subject |
| Polymers | 1 |
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