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| 电子记录器 | |||
| electronic recorder: 28 phrases in 11 subjects |
| Business | 1 |
| Drilling | 1 |
| Electronics | 2 |
| Engineering geology | 1 |
| General | 2 |
| Geophysics | 2 |
| Metallurgy | 2 |
| Mining | 2 |
| Space | 1 |
| Technology | 13 |
| Telecommunications | 1 |
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