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| 脉冲氩弧焊 | |||
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welding-pulsed arc : 24 phrases in 7 subjects |
| Aviation | 3 |
| Chemistry | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Rail transport | 3 |
| Space | 4 |
| Technology | 11 |
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