拱底石 meaning in English
[建筑] elbow; springing block
Examples
- A few paces off is an enormous pillar , and another ? seven in all down the length of the hall , supporing in the centre line the springing arches of the double groining
几步开外有根高大的柱子，接着又一根，再接着又是一根；大厅纵深一共竖着七根大柱，支撑着双拱屋顶落在横向正中的拱底石。