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| 有效作 用: 36 phrases in 14 subjects |
| Agriculture | 4 |
| Aviation | 2 |
| Bridge construction | 1 |
| Earth sciences | 2 |
| Economy | 2 |
| Electronics | 2 |
| Engineering geology | 1 |
| General | 1 |
| Metallurgy | 3 |
| Mining | 2 |
| Space | 4 |
| Sports | 1 |
| Technology | 10 |
| United Nations | 1 |
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