为了适应这类需求，开展宽带圆极化移相器的研究势在必行。

So it is necessary to research on wide band circle-polarized phase shifters for these cases.

youdao

为了适应这类需求，开展宽带圆极化移相器的研究势在必行。

So it is necessary to research on wide band circle-polarized phase shifters for these cases.

youdao