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| 声检测器; 声检波器; 声波探伤仪; 声波定位器; 音响探测器 | |||
| 声波探测器 | |||
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| 声探测器; 声检波器 | |||
| 声检测器; 声波探伤仪; 声波探测器; 声波定位器; 音响探测器 | |||
| acoustical detector: 20 phrases in 7 subjects |
| Aviation | 1 |
| Earth sciences | 2 |
| Electronics | 3 |
| Geophysics | 1 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 10 |
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