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埋焊 : 73 phrases in 12 subjects |
| Automobiles | 1 |
| Bridge construction | 2 |
| Chemistry | 2 |
| General | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 15 |
| Oil / petroleum | 14 |
| Rail transport | 1 |
| Shipbuilding | 4 |
| Space | 5 |
| Technology | 25 |
| Welding | 1 |
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