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| 碳弧钎焊 | |||
| 碳弧硬钎焊 | |||
| 碳弧硬钎焊 | |||
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| 碳弧钎焊; 碳弧铜焊 | |||
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carbon arc brazing : 4 phrases in 4 subjects |
| General | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Technology | 1 |
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