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| 四个; 四倍的 | |||
| 〈词头〉四个 | |||
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tetrakis : 14 phrases in 6 subjects |
| Chemistry | 2 |
| Electronics | 4 |
| Plastics | 2 |
| Polymers | 1 |
| Technology | 2 |
| Textile industry | 3 |
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