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ultrasonic attenuation
| measuring device
| ultrasonic attenuation | |
| met. | 超声波衰减 |
| measuring device | |
| eng.geol. | 仪表 |
| hydroel.st. | 测量仪表; 量具 |
| oil | 计量装置 |
| space | 测量装置 |
| tech. | 量测装置 |
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| 超声波衰减 | |||
| 超声波消音 | |||
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ultrasonic attenuation measuring device : 4 phrases in 3 subjects |
| Geophysics | 1 |
| Shipbuilding | 1 |
| Technology | 2 |
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