| |||
ecossonda | |||
sonda; sondador | |||
recetor falante; recetor acústico | |||
receptor acústico |
sounder : 24 phrases in 10 subjects |
Communications | 6 |
Earth sciences | 1 |
Electronics | 6 |
Fish farming pisciculture | 1 |
General | 1 |
Life sciences | 1 |
Natural sciences | 2 |
Physical sciences | 3 |
Radio | 2 |
Statistics | 1 |