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| geomagnetic poles | |||
| terrestrial magnetic pole | |||
| geomagnetic pole | |||
| dip pole | |||
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| geomagnetic pole | |||
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地磁极 : 49 phrases in 7 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Earth sciences | 4 |
| Geophysics | 3 |
| Oil / petroleum | 12 |
| Space | 7 |
| Technology | 20 |
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