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连 接 螺栓 : 90 phrases in 20 subjects |
| Architecture | 3 |
| Automobiles | 8 |
| Aviation | 1 |
| Bridge construction | 4 |
| Cables and cable production | 2 |
| Chemistry | 2 |
| Drilling | 8 |
| Electric machinery | 1 |
| Electronics | 4 |
| Hydroelectric power stations | 5 |
| Metallurgy | 2 |
| Nautical | 2 |
| Oil / petroleum | 6 |
| Plastics | 3 |
| Rail transport | 2 |
| Refrigeration | 1 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 33 |
| Wind Energy | 1 |
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