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熄弧熄弧 : 87 phrases in 12 subjects |
| Electrical engineering | 2 |
| Electricity | 5 |
| Electronics | 15 |
| General | 21 |
| Metallurgy | 1 |
| Military | 1 |
| Navy | 1 |
| Oil and gas | 1 |
| Oil processing plants | 1 |
| Rail transport | 1 |
| Technology | 36 |
| Welding | 2 |
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