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| 乙炔气熔接 | |||
| 乙烘焊 | |||
| 乙炔焊; 乙炔焊接; 氧乙缺焊; 气焊 | |||
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ацетиленовая сварка : 11 phrases in 3 subjects |
| General | 3 |
| Oil and gas | 1 |
| Technology | 7 |
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