 |
| |||
| acoustical energy source; source of sound | |||
| sound source; ..source of noise; acoustic source | |||
| Schallquelle: 9 phrases in 3 subjects |
| Construction | 3 |
| Earth sciences | 3 |
| General | 3 |
|
| |||
| acoustical energy source; source of sound | |||
| sound source; ..source of noise; acoustic source | |||
| Schallquelle: 9 phrases in 3 subjects |
| Construction | 3 |
| Earth sciences | 3 |
| General | 3 |