spark-gap : 66 phrases in 14 subjects |
Antennas and waveguides | 2 |
Automated equipment | 1 |
Automobiles | 1 |
Communications | 1 |
Electronics | 13 |
General | 1 |
High energy physics | 2 |
Measuring instruments | 9 |
Mechanic engineering | 2 |
Medical appliances | 1 |
Microelectronics | 1 |
Optics branch of physics | 2 |
Physics | 7 |
Technology | 23 |