radius什么意思

radius什么意思

radius n.桡骨；半径范围；半径（长度运闭肆）；周围

美 [ˈreɪdiəs] 英 ['reɪdiəs]

复数：radii  复数：radiuses  

同义词n.line,distance,length,area,range

英汉翻译

1.半径（长度）a straight line between the centre of a circle and any point on   its outer edge; the length of this line

2.半径范围；周围a round area that covers the distance mentioned from a central   point

3.桡骨the shorter bone of the two bones in the lower part of the arm   between the elbow and the wrist, on the same side as the thumb