短語詞組短語quadrature chrominance signal 正交彩色信號quadrature phase subcarrier signal 正交相位副載波信號quadrature signal generator 正交信號發(fā)生器quadrature modulated chrominance signal 正交調制彩色信號quadrature signal generation 正交信號産生Quadrature Doppler ultrasound signal 正交多普勒超聲信號if signal quadrature sampling 中頻正交採樣direct if signal quadrature sampling 中頻正交採樣 返回 quadrature signal