adj.四声道立体声的(四轨录音放音的)
"What we're doing here will lead to the equivalent of stereo, then quadraphonic, then surround sound. “我们现在做的将产生类似于立体声的系统，然后是四声道系统，然后环绕声系统。”
quadraphonic broadcasting system 四声道立体声广播系统
quadraphonic broadcasting 四声道立体声广播
quadraphonic modulator 正交调制器
quadraphonic reproducing system 四声道声重放系统
