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| 噪音频谱 | |||
| 噪声谱 | |||
| 噪声频谱 | |||
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| 噪声频谱 (出现在同一来源发出的噪声的频率范围。) | |||
| noise spectrum: 26 phrases in 13 subjects |
| Acoustics | 1 |
| Air defense | 2 |
| Automobiles | 2 |
| Communications | 1 |
| Construction | 1 |
| Ecology | 1 |
| Electronics | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geophysics | 1 |
| Space | 2 |
| Technology | 9 |
| Telecommunications | 3 |
| Wind Energy | 1 |
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