astronomical unit中文什么意思

• 天文单位〔地球至太阳间的平均距离〕。

• astronomical:    adj. 1.天文学(上)的。 2. ...
• unit:    n. 1.个体，一个，一人。 2.( ...
• astronomical aberration:    天文光行差

例句与用法

1. One astronomical unit equals the distance from the earth to the sun .
   一天文单位等于从地球到太阳的距离。
2. The convenient length unit for measuring distances between planets is the astronomical unit
   在天文学上，太阳系内天体的距离惯用
3. Recall that one astronomical unit is the average distance between the sun and the earth
   来表示，一天文单位即太阳和地球的平均距离请参阅
4. Pluto , the remotest planet in the solar system currently known , is about 80 astronomical units away from the sun
   太阳系与行星太阳系目前最遥远的行星冥王星距离太阳约
5. Astronomers believe that comets originate from the oort cloud which is located 5 , 000 to 100 , 000 astronomical units from the sun
   天文学家相信彗星诞生于距离太阳五千至十万个天文单位的奥尔特云。

百科释义

An astronomical unit (abbreviated as AU, au, a.u.