rowlock arch

英 美
  • 竖砌砌拱,竖砌砖拱
  • arch n.拱;拱门;拱状物v.成拱形;拱起adj.主要的;调皮的
  • rowlock n.桨架(顺砌的砖)
Noun:
  1. an arch that is formed with more than one concentric row of voussoirs