 |
| 有效 压力: 75 phrases in 18 subjects |
| Automobiles | 9 |
| Aviation | 6 |
| Bridge construction | 4 |
| Drilling | 1 |
| Earth sciences | 3 |
| Engineering geology | 7 |
| General | 1 |
| Geology | 1 |
| Mechanics | 2 |
| Metallurgy | 3 |
| Military | 1 |
| Mining | 5 |
| Nautical | 1 |
| Oil / petroleum | 5 |
| Shipbuilding | 2 |
| Space | 1 |
| Technology | 22 |
| Wind Energy | 1 |
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