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система тиску : 31 phrases in 10 subjects |
| Astronautics | 7 |
| Aviation | 5 |
| Communications | 1 |
| Mechanic engineering | 1 |
| Meteorology | 2 |
| Military | 6 |
| Oil / petroleum | 1 |
| Oil and gas | 6 |
| Space | 1 |
| Thermal engineering | 1 |
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