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| 气焊法 | |||
| 汽焊 | |||
| 自熔接 | |||
| 乙炔气焊 | |||
| 氧烘焊 | |||
| 乙块焊 | |||
| 氧块焊 | |||
| 气焊 | |||
| 乙炔焊; 氧炔焊; 熔焊; 气焊 (法); 熔接法 | |||
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| 乙炔焊 | |||
| 氧炔焊; 熔焊; 气焊 (法); 熔接法 | |||
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autogenous welding : 4 phrases in 2 subjects |
| Metallurgy | 2 |
| Technology | 2 |
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