词汇	signaling frequency
释义	signaling frequency 振铃信号频率
随便看	interactional system interactional theory interaction among cities interaction among factors interaction among individuals interaction among instructions interaction among objects interaction and communication Interaction and cooperation of knowledeg interaction and development interaction and disturbance interaction and gambling Interaction and Integration interaction and sharing of knowledge Interaction anxiety Interaction anxiousness interaction argument interaction arithmetic of implicit equation interaction arithmetic of parameter equation interaction association interaction attitude index interaction automatic control system interaction balance interaction balance method interaction balance principle