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衍射则是电波绕射传播到遮蔽区的现象。
The diffraction effect is the phenomenon of wave propagation into shadow region.
youdao
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现在广告出现了一种“广传播，窄接受”的现象。
There are now advertising a "wide spread, narrow to accept the" phenomenon.
youdao
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现在广告出现了一种“广传播，窄接受”的现象。
There are now advertising a "wide spread, narrow to accept the" phenomenon.
youdao