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| flat surface | |||
| surfacing | |||
| 平整表面: 21 phrases in 7 subjects |
| Aviation | 1 |
| Bridge construction | 1 |
| General | 2 |
| Plastics | 1 |
| Polygraphy | 1 |
| Shipbuilding | 1 |
| Technology | 14 |
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