穹窿顶

墓顶从东吴西晋时期的穹窿顶发展为东晋南朝时期的券顶。

The top of the tomb is developing from dome roof of Wu Jin Dynasty to the top coupons of Eastern Jin and Southern Dynasties period .

古罗马人创造了大型的砖石半球形穹窿顶，它沿着周边产生推力，最早的宏伟例子如罗马的万神庙，有厚重的支承墙体。

The Romans introduced the large-scale masonry hemisphere . A dome exerts thrust all around its perimeter , and the earliest monumental examples required heavy supporting walls .