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| middle-square method | |||
| 中平 法: 16 phrases in 9 subjects |
| Compressors | 1 |
| Economy | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Information technology | 2 |
| Mathematics | 1 |
| Mechanics | 1 |
| Technology | 7 |
| Textile industry | 1 |
| Water resources | 1 |
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