echoicadj.拟声的；回声的echovi.发出回声；回响vt.重复；模仿；附和n.回声；重复；共鸣Echo.n.[希神]山林女神（失恋于那喀索斯；其哀声留于山间成为回声）echoventriculogram脑室回声图echo-cardiograph回声心电仪echo ranging sonar回声定位声纳,回声测距声纳echoperitoneoscope超声腹腔镜echo preprocessing回波预处理echovirus eruption埃可病毒疹echo data of radar雷达回波echo communication回声通信echo extrapolation回波外推echoperitoneoscopy超声腹腔镜检查