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уровень давления: 19 phrases in 11 subjects |
Abbreviation | 1 |
Aviation | 2 |
Business | 1 |
Forestry | 2 |
Mechanic engineering | 1 |
Medical appliances | 3 |
Meteorology | 3 |
Oil and gas technology | 1 |
Radio | 1 |
Surveying | 1 |
Technology | 3 |