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| 铜铵丝 | |||
| 铜氨人造丝; 铜氨丝 | |||
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| 铜铵人造丝 | |||
| 铜氨人造丝 | |||
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Cuprammonium rayon : 2 phrases in 1 subject |
| Textile industry | 2 |
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