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| 桁构拱 | |||
| 腹拱; 拱肩拱; 桁架拱; 肩拱 | |||
| 空腹拱 | |||
| 拱肩拱 (主拱背上的小拱) | |||
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spandrel arch : 54 phrases in 5 subjects |
| Architecture | 3 |
| Bridge construction | 23 |
| Hydroelectric power stations | 2 |
| Metallurgy | 2 |
| Technology | 24 |
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