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| azimuth orientation unit | |||
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定 方位 仪 : 8 phrases in 7 subjects |
| Automated equipment | 1 |
| Drilling | 1 |
| Geophysics | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 2 |
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