They're not. They're all radio galaxies.
他们不是。它们都是射电星系。
Radio galaxy
原声例句
TED演讲（视频版） 2017年4月合集
TED演讲（视频版） 2017年4月合集
Well, very well, so we've seen one radio galaxy. That's nice.
好吧，好吧，我们已经看到了一个射电星系。 那很好。
中文百科
电波星系
电波星系和相关的电波喧噪类星体和耀变体，都是在无线电波长（频率在10 MHz到100 GHz，功率高达10 W）上非常明亮的活跃星系。电波的辐射来自于同步加速过程，被观测到的电波是来自于一对气体喷流的结构和外在的媒介，经由相对论性发光修正的作用后所发射的。电波喧噪的活跃星系令人感兴趣的不仅是星系本身，还因为它们可以在遥远的距离外被观测到，可以做为观测宇宙论上可贵的工具。最近，有很多任务作有效的从这些星系际介质，特别是星系团，得到了很好的结果。
英语百科
Radio galaxy 电波星系
Radio galaxies and their relatives, radio-loud quasars and blazars, are types of active galaxy that are very luminous at radio wavelengths, with luminosities up to 10 W between 10 MHz and 100 GHz. The radio emission is due to the synchrotron process. The observed structure in radio emission is determined by the interaction between twin jets and the external medium, modified by the effects of relativistic beaming. The host galaxies are almost exclusively large elliptical galaxies. Radio-loud active galaxies can be detected at large distances, making them valuable tools for observational cosmology. Recently, much work has been done on the effects of these objects on the intergalactic medium, particularly in galaxy groups and clusters.
- central lift agitator的意思
- central light的意思
- central light loss的意思
- central light loss, CLL的意思
- central limb的意思
- central limit的意思
- central limitation hypothesis的意思
- Central limit order book的意思
- Central limit theorem的意思
- central limit theory的意思
- Central line的意思
- central line, CL的意思
- central line intermediate reduction的意思
- central lines of track的意思
- centrallized control的意思
- centrallized traffic control,CTC的意思
- central的意思
- centrallizing switch的意思
- central load的意思
- central loading的意思
- central lobe的意思
- central lobe of cerebrum的意思
- Central lobule的意思
- central lobule of cerebellum的意思
- central local two tiered financing的意思