minute of arc 中文意思是什麼

minute of arc 解釋
弧分
  • minute : n 1 分〈一小時或一度的1/60〉。2 一會兒工夫；一瞬間，剎那。3 備忘錄，筆記；〈pl 〉（會議）記錄。vt...
  • of : OF ＝Old French 古法語。
  • arc : A. R. C. ＝ American Red Cross 美國紅十字會。n. 1. 弧；弓形，拱（洞）。2. 電弧，弧光。
  1. 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。
  2. Simultaneity it can generate the three - dimensional model of corresponding gear in a minute after by directly inputting gear parameters and the parameters of tooth form, which could prove th at the general tooth surface equation of double circular arc profile bevel gear obtained above was correct

    同時也可直接輸入齒輪參數和齒形參數，來生成相應齒輪的三維模型，從而證明了前面推導的雙圓弧弧齒錐齒輪通用齒面方程式的正確性。
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