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| 质量检测器 | |||
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mass detector : 22 phrases in 9 subjects |
| Aviation | 1 |
| Chemistry | 2 |
| Earth sciences | 2 |
| Geology | 2 |
| Metallurgy | 2 |
| Refrigeration | 1 |
| Space | 1 |
| Technology | 8 |
| Water resources | 3 |
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