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| 电离分光能谱仪 | |||
| 电离谱仪; 布拉格分光计 | |||
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ionization spectrometer : 12 phrases in 5 subjects |
| Earth sciences | 2 |
| Electronics | 3 |
| Metallurgy | 3 |
| Technology | 3 |
| Water resources | 1 |
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