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| 焊接铜烙铁头; 紫铜烙铁 | |||
| 烙铁; 钎焊器; 钎焊铜烙铁头 | |||
| 紫铜烙铁; 钎焊用铜; 钎焊烙铁 | |||
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soldering copper : 8 phrases in 2 subjects |
| Metallurgy | 4 |
| Technology | 4 |
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