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| 离子性，型晶体 | |||
| 离子型结晶 | |||
| 离子型晶体 | |||
| 离子晶体 | |||
| 离子型结晶 | |||
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ionic crystal : 8 phrases in 3 subjects |
| Metallurgy | 4 |
| Space | 1 |
| Technology | 3 |
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