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| 火焰气炬切割 | |||
| 火焰切割; 气割; 氧气切割 | |||
| 气炬切割 | |||
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| 气炬〔火焰〕切割 | |||
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flame cut : 12 phrases in 3 subjects |
| Bridge construction | 1 |
| Metallurgy | 10 |
| Technology | 1 |
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