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| 回电: 503 phrases in 38 subjects |
| Advertising | 4 |
| Agriculture | 1 |
| Air defense | 5 |
| Automobiles | 9 |
| Aviation | 21 |
| Business | 11 |
| Chemistry | 3 |
| Commerce | 2 |
| Communications | 1 |
| Computer numerical control | 1 |
| Construction | 1 |
| Dermatology | 1 |
| Economy | 5 |
| Electric machinery | 34 |
| Electric motors | 2 |
| Electronics | 136 |
| Exhibitions | 1 |
| Explosives and Explosive Ordnance Disposal | 3 |
| General | 29 |
| Geophysics | 2 |
| Household appliances | 1 |
| Hydroelectric power stations | 8 |
| Information technology | 5 |
| International trade | 4 |
| Metallurgy | 26 |
| Multimedia | 2 |
| Oil / petroleum | 8 |
| Power system protection | 4 |
| Project management | 1 |
| Rail transport | 16 |
| Refrigeration | 1 |
| Remote sensing | 1 |
| Semiconductors | 1 |
| Shipbuilding | 5 |
| Space | 20 |
| Steel production | 1 |
| Technology | 116 |
| Telecommunications | 11 |
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