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oxy-acetylene : 18 phrases in 9 subjects |
| Agriculture | 1 |
| Automobiles | 5 |
| Chemistry | 3 |
| Drilling | 2 |
| Electronics | 1 |
| Metallurgy | 1 |
| Rail transport | 1 |
| Shipbuilding | 2 |
| Space | 2 |
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