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| 21. | ground constants |
| 大地常数 |
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| 22. | terrestrial photography |
| 大地摄影 |
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| 23. | telluric current |
| 大地电流 |
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| 24. | magnetotelluric field |
| 大地电磁场 |
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| 25. | earth conductivity |
| 大地电导率 |
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| 26. | geodetic quadrangle |
| 大地四边形 |
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| 27. | ectricity field |
| 大地电场 |
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| 28. | ground pollution |
| 大地污染 |
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| 29. | geodetic information system |
| 大地信息系统 |
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| 30. | pulse of the earth |
| 大地脉动 |
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