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| 露丁头层; 丁砖层行 | |||
| 露〔丁〕头层 | |||
| 露头层; 丁头砖层; 丁头砌行 | |||
| 全丁砖皮 (层); 丁头行; 满丁砖行; 顶砖层; 顶砌层; 丁砖层; 丁头层; 丁砌砌层 | |||
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header course : 9 phrases in 3 subjects |
| Architecture | 1 |
| Metallurgy | 2 |
| Technology | 6 |
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