例句與造句

1. As a natural limit for angular resolution, one may take the angular size of the central diffraction disk .
   我們可以取中心衍射環的角直徑作為角分辨率的一種自然極限。
2. The combination of very large radio flux and exceedingly small angular size means that the sources have a fantastic surface brightness .
   極大的射電流量同極小的角經集于一身，意味著這些發射源有難以置信的高表面亮度。
3. The intervening matter between the source and the observer gravitationally deflects and focuses the light bundle, increasing the apparent angular size of the source .
   光源與觀測者之間的物質對光束產生引力偏折和聚焦作用，使光源的視角徑加大。
4. The angular size of the moon viewed from the earth is about 0 . 5
   從地球看來，月球的視直徑即月面最遠兩點的角距約為0 . 5度。
5. Thus , we can use our hands to measure roughly the angular sizes of various objects
   換句話說，我們可以用自己的手作量角器，量度天體的大小或距離。
6. It's difficult to find angular size in a sentence. 用angular size造句挺難的
7. Since the distance between the moon and the earth is not constant , the angular size of the moon can have a small variation
   由于地球和月球的距離并不固定，所以在地球看來，月球的角大小亦會出現變化。
8. The angular size , measured in degrees or arc seconds , which is very important in astronomy , is not commonly used in everyday life
   我們亦會介紹一個天文學上非常重要，但日常生活很少接觸到的概念角距和角大小。
9. It could happen that the moon is at the right position , but its angular size is too small to cover the whole sun . hence , there will be an
   有時，月球雖然處于能造成日食的位置，但由于月球的角大小不足以掩蓋整個太陽，便會出現
10. During solar eclipse , if the angular size of the moon is larger than that of the sun , the sun will be totally covered , resulted in total solar eclipse
    日食solar eclipse時太陽被月球所侵蝕與及月食lunar eclipse時月球被地影所蠶食的意思亦顯而易見。
11. At arm s length , the angular size of our fists is about 10 , fingers is about 1 and the tip of the thumb to the tip of the little finger of an extended hand is about 20
    將手伸直后，拳頭的角大小約為10度，手指約為1度，若把手掌張開，由拇指尖至小指尖的角距則約為20度。
12. Due to the tidal friction , the moon is receding from us . tens of thousand of years later , the angular size of the moon will be so small that there will be no total solar eclipse anymore
    由于潮汐摩擦作用，月球正逐漸遠離地球，數萬年后，月球的視直徑會變得很小，屆時地球上便再不能看到日全食了。
13. The distance measurement in astronomy is very basic , but also very difficult . for example , it is very easy to measure the angular size of a galaxy . but in order to find out its actual size , we have to know the distance between the galaxy and us
    距離的量度是天文學上最基本但亦極困難的工作，例如在宇宙深處的一個星系，我們要量度它的角大小非常容易，但要知道這星系的真正大小，就要同時知道它和我們的距離。
14. People usually think that larger telescope will magnify the object more . the magnification is the ratio of the apparent sizes of the object . for example , if the angular size of the object is one arc minute and through a telescope , its apparent size becomes 30 arc minutes , then we say the magnification is 30
    很多人以為大型望遠鏡可以把天體放得更大，事實上望遠鏡要獲得很高的倍率是很容易的只要改用較短焦距的目鏡便可以了，但就算是大型望遠鏡，倍率也極少超過500倍，一般都只是使用100至200倍。