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| 泡沫聚氯乙烯 | |||
| 发泡聚氯乙烯 | |||
| 聚氯乙烯泡沫塑料 | |||
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foamed polyvinyl chloride : 3 phrases in 2 subjects |
| Shipbuilding | 1 |
| Technology | 2 |
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