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тип резервирования (oleg.vigodsky) |
protection type : 23 phrases in 12 subjects |
Aerohydrodynamics | 2 |
Astronautics | 1 |
Electricity | 1 |
Electronics | 1 |
Energy industry | 2 |
General | 1 |
Household appliances | 1 |
Military | 2 |
Nanotechnology | 3 |
Nuclear physics | 4 |
Technology | 3 |
Telecommunications | 2 |