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| 乙炔氧气 | |||
| acetylene-oxygen: 23 phrases in 10 subjects |
| Chemistry | 2 |
| Construction | 1 |
| Drilling | 1 |
| Earth sciences | 1 |
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| Hydroelectric power stations | 3 |
| Metallurgy | 3 |
| Oil / petroleum | 3 |
| Space | 1 |
| Technology | 7 |
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