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burner gas : 31 phrases in 10 subjects |
| Analytical chemistry | 1 |
| Chemistry | 8 |
| Construction | 7 |
| Environment | 1 |
| General | 4 |
| Industry | 1 |
| Information technology | 1 |
| Metallurgy | 5 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 2 |
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