核衰变产生的微粒或电磁波放射物的原子或分子由于核衰变放出的一束微粒或电磁波 A stream of particles or electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.
啸声干扰一种由于诸如闪电等大气干扰而产生的音频电磁波，具有典型的逐渐减弱频率的特征，该频减引起了检波设备中调逐渐下降的啸声 An electromagnetic wave of audio frequency produced by atmospheric disturbances such as lightning, having a characteristically decreasing frequency responsible for a whistling sound of descending pitch in detection equipment.
无线通讯以电磁波密码进行的可听信号的联络 Communication of audible signals encoded in electromagnetic waves.
调制器用以调制电磁波的装置 A device used to modulate an electromagnetic wave.
