上世纪八十年代，我们课题组成功研制了噪声调频雷达原理样机。

In the 1980s, we have successfully developed a noise FM radar prototype.

youdao

上世纪八十年代，我们课题组成功研制了噪声调频雷达原理样机。

In the 1980s, we have successfully developed a noise FM radar prototype.

youdao