例句與造句

1. The celestial globe invented by zhang heng , chinese scientist of the east han dynasty ( 25 a.d . - 220 a.d. ) , was the first of its kind in the world. it determined that the angular diameter of both the sun and the moon was 0.5 .
   中國東漢科學家張衡發明的天球儀是世界上最早的天球儀。
2. Angular diameter of the retro - reflecting device
   回復反射裝置的角直徑
3. It's difficult to find angular diameter in a sentence. 用angular diameter造句挺難的