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| шпинель; лал; спинель | |||
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尖 晶 石 : 69 phrases in 8 subjects |
| General | 26 |
| Geology | 9 |
| Metallurgy | 3 |
| Microelectronics | 1 |
| Mineralogy | 1 |
| Mining | 4 |
| Silicate industry | 2 |
| Technology | 23 |
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