semidiameter

英 [semɪdaɪ'æmɪtə] 美 [ˌsemaɪdaɪ'æmɪtə]

• n. 半径

英英释义

Noun:

1. the apparent radius of a celestial body when viewed as a disc from the earth

例句

用作名词 (n.)

1. Relationships between the minor axis semidiameter and major axis semidiameter have been empirically determined for different structural detail geometries.
   对于不同结构细节的几何形状，已经确定了短轴和长轴半径之间的关系。

词汇搭配

• apparent semidiameter 视半径