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| 数据储存和检索 | |||
| 数据存储和检索 | |||
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data storage and retrieval : 16 phrases in 7 subjects |
| Aviation | 1 |
| Earth sciences | 7 |
| Economy | 1 |
| Electronics | 3 |
| Geology | 1 |
| Technology | 2 |
| United States | 1 |
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