modulations调制modulationn.调音；调节；转调；抑扬modulation noise source调频噪声源modulation power source调制电源Modulation-arithmetic调制算法modulation demodulation调制解调modulation self-noise调制自噪声modulation transfer RNA调节转运RNA, 调节tRNAmodulation identication调制识别modulation input number调制输入数modulation polarography调制极谱法modulation divider tube分频管