短語詞組短語group p delay meter 波群延遲計(jì)group casting delay equalization 群時(shí)延均衡group casting delay time 群時(shí)延group velocity delay 群速延遲group velocity delay ripple 群時(shí)延抖動(dòng)group casting delay distortion 群時(shí)延失真group -delay dispersion 群延遲色散補(bǔ)償 返回 group delay