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31. | fire brick arch |
| 耐火砖拱 |
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32. | apsidal distance |
| 拱距 |
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33. | hogging correction |
| 拱校正 |
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34. | buckling of arch |
| 拱屈曲 |
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35. | multicenter arch |
| 多心拱 |
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36. | reinforced concrete arch |
| 钢筋混凝土拱 |
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37. | concentric arch |
| 同心拱 |
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38. | extradossed arch |
| 楔形拱 |
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39. | continuous arch |
| 连续拱 |
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40. | arch scheme arch |
| 圆弧拱 |
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