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| 计数率 | |||
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count rate : 55 phrases in 9 subjects |
| Electronics | 4 |
| Engineering geology | 1 |
| Geology | 1 |
| Geophysics | 37 |
| Metallurgy | 1 |
| Nuclear and fusion power | 1 |
| Nuclear physics | 1 |
| Oil / petroleum | 5 |
| Technology | 4 |
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