射电天文学

It comes from the National Radio Astronomy Observatory.

它是从国家射电天文学观察台开发出来的。

Mixer is usually used in communications, radar, radio astronomy, spectroscopy and so on.

混频器在通信、雷达、制导、遥感技术、射电天文学和波谱学等方面有着广泛的应用。

Radio astronomy has in the last decade opened a new window on the physical universe.

射电天文学在过去的十年里在物质的宇宙打开了一扇新的窗户。

The mass of one of these suppressive black holes has recently been measured using radio astronomy .

对于这些有着巨大质量的黑洞，最近可利用射电天文学来测量它们的质量。

Radio astronomy today is armed with the largest antennas in the world.

射电天文学拥有世界上最大的天线。

Both at home and abroad,it has succeeded in appling to the medical diagnosis, geophysics, radio astronomy etc.

在国内外己成功应用于医疗诊断、地球物理、射电天文学等领域。

As we know, digital technique has gained the great development in the ages, and it can be found in almost every engineering science including radio astronomy and radio telescope technique.

在过去几十年里，数字技术取得了重大发展。在很多技术科学领域都能找到它的踪影，包括射电天文学以及射电望远镜技术。

Fast Fourier Transform is one of the basic operations in digital signal processing, which has been widely applied in communication,medical electronics,radar and radio astronomy.

快速傅立叶变换属于数字信号处理中最基础的运算，已广泛应用于通讯、医学电子学、雷达和射电天文学等领域。

By construction, all of these methods require Nyquist-rate sampling of received signals to estimate a small number of DOA's in angle space, which is very expensive in some applications such as radar or radio astronomy.

通过构建，所有这些方法都要求接收信号的奈奎斯特率取样来估计角度空间的小数量的DOA，这在像雷达或射电天文学之类的某些应用中是非常昂贵的。

We are used to calling an instrument of this kind in optics a telescope, and the radioastronomical counterparts are therefore briefly named "radio telescope".

在光学上我们通常称这种类型的仪器叫望远镜，因而射电天文学上的对应物简称为&射电望远镜&。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。