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| description of the invention | |||
| 发明 说明 书: 22 phrases in 8 subjects |
| Business | 3 |
| Economy | 5 |
| Electronics | 1 |
| International trade | 2 |
| Project management | 1 |
| Securities | 7 |
| Shipbuilding | 1 |
| Technology | 2 |
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