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钨极气体保护 : 37 phrases in 11 subjects |
| Automobiles | 1 |
| Aviation | 3 |
| Chemistry | 2 |
| Electric machinery | 4 |
| Electronics | 1 |
| Metallurgy | 8 |
| Oil / petroleum | 3 |
| Pipelines | 1 |
| Rail transport | 1 |
| Space | 2 |
| Technology | 11 |
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