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自动 弧焊 : 80 phrases in 13 subjects |
| Architecture | 1 |
| Aviation | 2 |
| Bridge construction | 1 |
| Chemistry | 3 |
| Construction | 1 |
| Electronics | 6 |
| Hydroelectric power stations | 1 |
| Metallurgy | 17 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Shipbuilding | 4 |
| Space | 2 |
| Technology | 40 |
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