active galaxy中文什么意思

活动星系

• active:    adj. 1.活动的，有活动力的；【 ...
• galaxy:    n. 1.〔the G-〕 银河；银 ...
• be active in:    对…很积极; 活跃于; 积极参加; ...

例句与用法

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1. A small percentage of galaxies called active galaxies emit tremendous amounts of energy
   有一小部分被称做活动星系的星系放射出巨大的能量。
2. Some active galaxies emit jets and blobs of highly energetic , electrically charged particles
   一些活动星系发出高能的喷射和溅射? ?带电的粒子。
3. We are not completely sure how an active galaxy is formed and how it generates such a large amount of energy
   其实我们仍不大清楚活动星系的形成过程，亦不知道星核放射出大量辐射的机制。
4. The milky way is not an active galaxy , but it does have a powerful source of radiation called sagittarius a * at its center
   银河系不是一个活动星系，但它中心也有一个强大的射电源称为“人马座a * ” 。
5. The double black holes were found in a bright , highly active galaxy known as ngc6240 , about 400 million light - years from the earth
   这对黑洞存在于一个极其活跃明亮的星系中，该星系被命名为ngc6240 ，它距地球约有4亿光年。