 |
| |||
| constant-level balloon; drifting balloon; horizontally floating balloon; no-lift balloon; zero-buoyancy balloon | |||
| transosonde | |||
| уравновешенный шар- зонд: 4 phrases in 1 subject |
| Technology | 4 |
|
| |||
| constant-level balloon; drifting balloon; horizontally floating balloon; no-lift balloon; zero-buoyancy balloon | |||
| transosonde | |||
| уравновешенный шар- зонд: 4 phrases in 1 subject |
| Technology | 4 |