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| automatic submerged arc welding | |||
| automatic submerged-arc welding | |||
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自动 埋 弧焊 : 21 phrases in 6 subjects |
| Chemistry | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 4 |
| Shipbuilding | 3 |
| Space | 1 |
| Technology | 11 |
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