“回波”的英语？

超声测压过程中信号受到噪声的干扰, 使得回波信号质量较差.In ultrasonic pressure measuring outside pipe, echo signal is disturbed by noise.因而对装甲目的的毫米波回波特性的研讨拥有十分主要的意思.So the target echo of armor of millimeter wave is very important.安装在高速运动载体上的雷达高度表,...