dipole

Geomagnetic South Pole represents the axis of the Earth's magnetic dipole.

地磁南极代表地球磁偶极子的轴。

With most FM radio stations today, a vertical dipole gives as much signal as a horizontal one.

对如今大多数的调频广播电台来说，垂直偶极子天线和水平偶极子天线发出的信号的强度是一样的。