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| 噪声系数; 噪声指数 | |||
| figure noise: 55 phrases in 15 subjects |
| Air defense | 6 |
| Automobiles | 1 |
| Aviation | 4 |
| Business | 1 |
| Construction | 1 |
| Electronics | 14 |
| Geophysics | 3 |
| Information technology | 2 |
| Medical | 1 |
| Metallurgy | 1 |
| Radio | 1 |
| Space | 5 |
| Technology | 12 |
| Telecommunications | 2 |
| Wind Energy | 1 |
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