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读数器 : 53 phrases in 9 subjects |
| Astronautics | 1 |
| Cartography | 1 |
| Computers | 1 |
| Electronics | 1 |
| General | 14 |
| Information technology | 4 |
| Military | 3 |
| Oil processing plants | 1 |
| Technology | 27 |
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