pilot balloon
| plotting board
| pilot balloon | |
| earth.sc. | globo piloto |
| meteorol. | pibal |
| plotting board | |
| automat. | cuadro de trazado |
| avia. | mesa de navegación |
| mil., artil. | plancheta de tiro |
| |||
| globo piloto | |||
| pibal | |||
| globo sonda | |||
|
pilot balloon : 6 phrases in 3 subjects |
| Aviation | 1 |
| Life sciences | 4 |
| Technology | 1 |