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拱圈中心角
meaning in Chinese
central angle of arch
included angle of arch
Related Words
边缘中心角
横向拱
缺口拱
拱石
向上拱
回廊拱
弧拱
板拱
塌落拱
端拱
拱圈应力调整
拱圈中心
拱圈砖
拱券
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