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| base area | |||
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底面 面积 : 46 phrases in 14 subjects |
| Architecture | 1 |
| Aviation | 2 |
| Bridge construction | 7 |
| Ceramics | 1 |
| Construction | 1 |
| Drilling | 3 |
| Earth sciences | 3 |
| Metallurgy | 3 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 20 |
| Telecommunications | 1 |
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