The diffraction effect is the phenomenon of wave propagation into shadow region.

衍射则是电波绕射传播到遮蔽区的现象。

youdao

U OK, so we're going to call U the shadow of my region instead.

所以我将把阴影区域叫做。

youdao

U OK, so we're going to call U the shadow of my region instead.

所以我将把阴影区域叫做。

youdao