A catenary arch distributes weight more evenly than a half circle, without bulging or buckling.

链状比半圆更能承受住重量，并且不会被压弯。

If you watched my video about the science of igloos, you remember that this shape, called a catenary arch, distributes tension and compression more evenly than a half circle shape.

如果你看我关于冰屋原理的视频，那么你会记得这种称为悬链线拱的形状比半圆形更均匀地分布张力和压力。