多次反射回波 meaning in Chinese

multiecho
multiple false echoes
multiple reflection echoes
round triechoes
round trip echo

So it is essential to diminish the errors and enhance its anti - jamming ability . an innovative method of measuring pipeline thickness based on power spectral evaluation computing has been put forward . besides , experiments on the on - line measurement have yielded good results , proving the veracity and reliability of the measurement
介绍了为减小系统的测量误差、提高系统抗干扰能力而进行的对超声波回波信号的分析研究工作，创新地提出了一种基于对超声脉冲多次反射回波功率谱估计的超声测厚方法，并通过实验证明了该方法用于在线检测的准确性与可靠性。