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| 声底值 | |||
| 本底背景噪声 | |||
| 声背景值 | |||
| 背景声 | |||
| ★ 背景噪声 | |||
| ★ 本底噪声 | |||
| 背景噪音 | |||
| 背景杂音; 暗噪声; 基底噪声; 环境噪声; 本底嗓声 | |||
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| 背景噪音 (来自非监测渠道的噪音。) | |||
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background noise : 46 phrases in 13 subjects |
| Air defense | 3 |
| Automobiles | 2 |
| Aviation | 3 |
| Communications | 1 |
| Electronics | 3 |
| Geophysics | 1 |
| Nautical | 1 |
| Project management | 1 |
| Rail transport | 1 |
| Remote sensing | 1 |
| Space | 5 |
| Technology | 22 |
| Television | 2 |