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| 硬纤维板材料，结构 | |||
| 硬质纤维 | |||
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| 硬质纤维 | |||
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hard fibre : 15 phrases in 7 subjects |
| Architecture | 1 |
| Chemical fibers | 2 |
| Chemistry | 1 |
| General | 2 |
| Metallurgy | 2 |
| Name of organization | 5 |
| Technology | 2 |
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