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质谱 仪 : 247 phrases in 22 subjects |
| Agriculture | 6 |
| Animal husbandry | 2 |
| Aviation | 6 |
| Biotechnology | 1 |
| Chemistry | 13 |
| Earth sciences | 31 |
| Ecology | 2 |
| Electronics | 21 |
| Engineering geology | 1 |
| General | 6 |
| Geology | 17 |
| Metallurgy | 15 |
| Navigation | 1 |
| Oil / petroleum | 11 |
| Perfume | 1 |
| Plastics | 1 |
| Polymers | 3 |
| Refrigeration | 5 |
| Space | 32 |
| Technology | 62 |
| United States | 1 |
| Water resources | 9 |
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