semidiameters

semidiameters

美 　英

• n.半径；【天】(天体的)视半径
• 网络半径差

词形变化

复数：semidiameters  

英汉解释

n.	1. 半径;【天】(天体的)视半径

英英解释

n.	1. half of the angular diameter of the visible disk of an astronomical object as measured by an observer