 |
| |||
| sound spectra analysis | |||
| sound spectrum analysis; sound analysis | |||
| 声谱分析: 19 phrases in 5 subjects |
| Air defense | 2 |
| Ecology | 1 |
| Electronics | 12 |
| General | 1 |
| Technology | 3 |
|
| |||
| sound spectra analysis | |||
| sound spectrum analysis; sound analysis | |||
| 声谱分析: 19 phrases in 5 subjects |
| Air defense | 2 |
| Ecology | 1 |
| Electronics | 12 |
| General | 1 |
| Technology | 3 |