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火焰检测器 : 69 phrases in 13 subjects |
| Automobiles | 2 |
| Chemistry | 21 |
| Earth sciences | 4 |
| Ecology | 2 |
| Electronics | 1 |
| General | 1 |
| Geology | 4 |
| Laboratory equipment | 3 |
| Oil / petroleum | 4 |
| Oil processing plants | 6 |
| Space | 2 |
| Technology | 12 |
| Water resources | 7 |