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限 制管 : 41 phrases in 13 subjects |
| Automobiles | 4 |
| Aviation | 5 |
| Business | 3 |
| China | 1 |
| Electronics | 12 |
| Information technology | 1 |
| Management | 2 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Quality control and standards | 2 |
| Securities | 3 |
| Space | 1 |
| Technology | 3 |
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