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| spacing factor; distribution ratio | |||
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分布比 : 36 phrases in 11 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Business | 7 |
| Cartography | 1 |
| Electronics | 3 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| Mathematics | 10 |
| Oil / petroleum | 3 |
| Statistics | 3 |
| Technology | 4 |
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