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| 钾玻璃; 硬玻璃; 硬质玻璃; 耐火玻璃; 难容玻璃; 难熔玻璃 | |||
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тугоплавкое стекло : 7 phrases in 4 subjects |
| Electronics | 3 |
| General | 1 |
| Silicate industry | 1 |
| Technology | 2 |
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