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| 重力焊 | |||
| 重力式电弧焊; 重力焊 (接) | |||
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| 倚焊 | |||
| gravity welding: 11 phrases in 5 subjects |
| General | 3 |
| Metallurgy | 2 |
| Nautical | 1 |
| Rail transport | 1 |
| Technology | 4 |
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