aperture : 56 phrases in 12 subjects |
Agriculture | 4 |
Antennas and waveguides | 9 |
Economy | 1 |
Fishery fishing industry | 2 |
Forestry | 2 |
Lighting other than cinema | 2 |
Medical | 23 |
Radio | 3 |
Remote sensing | 6 |
Telegraphy | 2 |
Thermal Energy | 1 |
Video recording | 1 |