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拱洞的外弧面 meaning in English

extrados

Related Words

  1. 拱洞
  2. 拱弧
  3. 弧拱
  4. 洞洞板
  5. 洞洞装
  6. 毛洞洞
  7. 拱顶砖石
  8. 拱洞
  9. 拱度
  10. 拱度(成弧形)
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