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| two pinned arch; two hinged arch; arch hinged at ends | |||
| two-hinged arch; double-hinged arch; two-pinned arch; double hinged arch | |||
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双铰拱 : 46 phrases in 4 subjects |
| Architecture | 2 |
| Bridge construction | 5 |
| Rail transport | 1 |
| Technology | 38 |
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