This is the WMAP microwave background that we see.
这是我们通过WMAP探测器的微波背景下所看到的。
What could have caused a microwave background?
是什么能够造成这种微波背景？
This cosmic microwave background radiation, they said, represents the ancient afterglow of the big bang.
他们说，这宇宙微波背景幅射代表着宇宙大爆炸的余辉。
It is meant for engineers with little microwave knowledge background.
这个课程对缺少射频知识背景的工程师很有价值。
Bachelor degree, Microwave, Radio, electronics or Telecom engineering background.
微波、无线电专业，本科及以上学历。
Bachelor degree, Microwave, Radio, electronics or Telecom engineering background.
微波、无线电专业，本科及以上学历。
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