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| 气体保护锡〔电极电〕弧焊 | |||
| 鸭极惰性气体保护焊 | |||
| 气体保护钨极电弧焊 | |||
| 钨极气体保护电弧焊 | |||
| 钨极惰性气体保护焊 | |||
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| 气体保护钨极电弧焊; 钨极气体保护 | |||
| gas tungsten arc welding: 16 phrases in 9 subjects |
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