Dipole
01
偶极子, 双极
a pair of equal and opposite electric charges or magnetic poles separated by a small distance
02
偶极子, 偶极天线
a simple type of antenna made of two metal rods, connected in the middle, that is half the wavelength of the signal it transmits or receives
例子
The radio station uses a dipole antenna to broadcast signals over a wide area.
广播电台使用偶极子天线在广阔的区域广播信号。
Ham radio operators often build their own dipole antennas for better reception.
业余无线电操作员经常自制偶极天线以获得更好的接收效果。
