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| flujo de gas | |||
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gas flow : 20 phrases in 10 subjects |
| Earth sciences | 4 |
| Electronics | 3 |
| Environment | 1 |
| General | 2 |
| Information technology | 1 |
| Life sciences | 1 |
| Measuring instruments | 4 |
| Mechanic engineering | 1 |
| Metallurgy | 2 |
| Physical sciences | 1 |
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