Real echoes usually fade away before they become thatdistorted, but you can see how it works with an artificial echo on two recorders.

真正的回声常常在被改变时就消失了，但你可以通过两台录音机上的人工的回声知道它们是如何工作的。

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Artificial intelligence principles are used to determine and analyse the defects according to pulse echo characteristics.

采用人工智能原理，根据脉冲回波特征，对缺陷作出判断和分析。

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According to the echo area and intensity change of target cloud, the qualitative judgment that the artificial rainfall is effective or not can be gotten.

根据作业云回波面积和强度的变化，可定性判断人工增雨是否有效。

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