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| 凸焊; 点焊接 | |||
| 点焊 | |||
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| 点焊 | |||
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point welding : 20 phrases in 7 subjects |
| Architecture | 1 |
| Bridge construction | 2 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Steel production | 1 |
| Technology | 12 |
| Wind Energy | 1 |
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