例文
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- He trained at the Geomagnetic Observatory in Fredericksburg, Virginia.
- Kew Observatory quickly became one of the most renowned geomagnetic observatories in the world.
- The second geomagnetic observatory was established in 2008.
- Using data from the Intermagnet Lanzhou geomagnetic observatory, geologists Lazo Pekevski from the Ss.
- Observations by radar, rockets, satellites, and geomagnetic observatories are used to study EEJ.