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词汇
Echo
释义
Echo
回波,回音
一种波动现象,当一个原始的振动波发生後,其波动即向四面扩散,碰到有障碍物即被反射同来,产生回波或回音,同被传播时慢慢的被衰减,故其波幅均较原始波小,而其时间相位也较原始波动延缓。
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更新时间:2025/6/19 16:29:02