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| 电弧点焊 | |||
| 电铆焊 | |||
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| 电钏焊 | |||
| 电铆焊 | |||
| 电弧点焊 | |||
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arc-spot welding : 7 phrases in 3 subjects |
| Construction | 1 |
| Metallurgy | 3 |
| Technology | 3 |
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