continuous duty : 38 phrases in 14 subjects |
Accounting | 1 |
Armored vehicles | 1 |
Astronautics | 3 |
Automated equipment | 5 |
Automobiles | 1 |
Electrical engineering | 2 |
Electronics | 8 |
Energy industry | 1 |
Military | 3 |
Nautical | 1 |
Production | 1 |
Quality control and standards | 2 |
Technology | 8 |
Telecommunications | 1 |