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| 质子地磁仪 | |||
| 质子磁力仪 | |||
| 质子磁强计 | |||
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| 质子磁强仪 | |||
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proton magnetometer : 16 phrases in 5 subjects |
| Earth sciences | 3 |
| Oil / petroleum | 5 |
| Space | 2 |
| Technology | 5 |
| United Nations | 1 |
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