简介:通过不同于正常路径的其他途径而到达给定点上的信号。在该点上,此信号有足够的大小和时延,以致可觉察出它与由正常路径传送来的信号有区别。Through other way different from the normal path and arrived at a given point on the signal. On this point, the signal has enough size and time delay, so that can detect it with the signal transmitted from the normal path into the difference.
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