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| n-fold symmetry | |||
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次对称 : 35 phrases in 11 subjects |
| Agriculture | 1 |
| Business | 1 |
| Cytogenetics | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| General | 1 |
| Genetics | 1 |
| Metallurgy | 5 |
| Mining | 1 |
| Oil / petroleum | 5 |
| Technology | 16 |
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