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| 垂直面; 铅垂面; 竖直面 | |||
| vertical surface: 31 phrases in 9 subjects |
| Automobiles | 3 |
| Electronics | 6 |
| Explosives and Explosive Ordnance Disposal | 2 |
| General | 1 |
| Information technology | 1 |
| Metallurgy | 2 |
| Nautical | 1 |
| Shipbuilding | 3 |
| Technology | 12 |
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