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| class of business; classification of traffic | |||
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业务分类 : 21 phrases in 11 subjects |
| Aviation | 1 |
| Business | 4 |
| Economy | 3 |
| Electronics | 1 |
| Finances | 3 |
| Management | 1 |
| Securities | 1 |
| Space | 1 |
| Technology | 1 |
| Telecommunications | 2 |
| Textile industry | 3 |
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