 |
| |||
| 测声仪; 测声计; 比声计 | |||
| |||
| 噪声计 | |||
| 声级计 | |||
| 测声仪 | |||
| 声级仪; 噪声仪; 比声计 | |||
| 测声计 | |||
|
acoustical meter : 28 phrases in 6 subjects |
| Earth sciences | 4 |
| Hydroelectric power stations | 1 |
| Nautical | 1 |
| Otorhinolaryngology | 2 |
| Space | 1 |
| Technology | 19 |
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