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| 拱鹰架 | |||
| 拱架; 拱鹰架 | |||
| 拱模; 拱赝架; 碹架 | |||
| 券模; 碹胎; 拱顶脚手架 | |||
| arch centering: 8 phrases in 3 subjects |
| Architecture | 1 |
| Bridge construction | 2 |
| Technology | 5 |
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