短語詞組短語signal propagation velocity 信號傳播速度limiting signal velocity 極限信號速度forwardtransfer signal velocity 前進速度Velocity signal 速率信號Doppler Blood Velocity Signal 血流多普勒信號effective particle velocity signal 有效信號multi -velocity signal processing 多速率信號處理effective particle velocity signal radiated 有效發(fā)射信號effective particle velocity signal duration 有效信號持續(xù)期間 返回 signal velocity