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
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。
