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| 耐火砖块; 耐火砖 (指较大的) | |||
| 耐火砌块; 耐火垫 | |||
| refractory block: 12 phrases in 4 subjects |
| Architecture | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 7 |
| Technology | 3 |
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