radio waves have been发音

意思翻译

无线电波已经

相似词语短语

radio waves───[电子]无线电波

have been───已经；一直；去过（现在完成时）

have been dead───已经死了

have been there───亲眼看到；直接了解；全都知道；曾到过那里；全都知道， 直接了解， 亲眼看到

l have been───我一直

have been to───v.曾经到过（去过）

have been in───呆在某个地方；去过某个地方

have you been───你有没有

have been on───已经开始了

双语使用场景

Radar works by recording radio waves that have been reflected from the object under observation.───通常雷达通过从物体反射回的无线电波来确认位置。

Some very important discoveries have been made by this technology, especially you consider that some objects in space give off radio waves but don't emit any light.───技术后，已取得了一些非常重要的发现，尤其是考虑到太空中的一些物体会发出无线电波，但不会发出任何光。

Ambient radio waves have largely been ignored as a potential power source until recently, because the power of a broadcast radio signal rapidly decreases with distance.───直到最近环境无线电波才格外受到重视成为一种潜在的电源，这是因为广播电台的无线电信号发电随着距离的增加而锐减。

Radio waves have been considered radiant energy.───人们已经认识到，无线电波是一种辐射。

英语使用场景