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| symmetry of crystal (【技】根据晶体其对称元素进行对称操作，能使其等同部分产生规律性的重合特性。) | |||
| crystal symmetry | |||
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晶体对称性 : 8 phrases in 4 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Metallurgy | 5 |
| Technology | 1 |
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