modulations调制modulationn.调音；调节；转调；抑扬modulation of water peak水峰调制modulation code sequence调制码序列modulation frequency VFT调频音频电报modulation classification调制识别modulation of transmitter发射机调制modulation classfiication调制分类modulation type amplifier调制型放大器modulation interferometer调制干涉仪,调制型干涉仪Modulation/Demodulator调制解调modulation characteristic灯特性