If you were to slice a real igloo in half, you'd see a shape called a catenary.

如果把真正的冰屋分成两部分，你可以看见悬线的形。

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

比半圆更能承受住重量，并且不会被压弯。

All cables sag under their own weight, following a curve called a catenary.

所有电缆都在自身重量的作用下下垂，遵循一条称悬线的曲线。

It's set to host about 3,000 employees and is dominated by a huge aircraft-hangar-inspired catenary roof that forms its main structure.

它将容纳约 3,000 名员工，并以构成其要结构的巨大飞机机库灵感的悬屋顶导地位。

If you know the weight of the cable, you can use the catenary equation with the measured sag distance to estimate cable force fairly accurately.

如果您知道电缆的重量，则可以使用悬线方程和测量的垂距来相当准确地估计电缆力。

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悬线拱的形比半圆形更均匀地分布张力和压力。

The entire catenary from New York to  DC was built to carry power at 25 hz—a different frequency than the rest of the American power  grid would eventually adopt at 60 hz.

从纽约到华盛顿特区的整条接触网的输电频率 25 Hz，与美国电网其他部分最终采用的 60 Hz 频率不同。