弘扬国学 · 传承文化

luminosity

英 [luːmɪ'nɒsətɪ] 美 [,lʊmə'nɑsəti]

解释

n. [光][天] 光度；光明；光辉

※ 提供单词"luminosity"的中文意思、发音示范及音标对照，中英文词源、例句和用法等。

英文词源

luminosity (n.): 1630s, "quality of being luminous," from French luminosité or else a native formation from luminous + -ity. In astronomy, "intrinsic brightness of a heavenly body" (as distinguished from apparent magnitude, which diminishes with distance), attested from 1906.

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例句和用法

1. For a few years its luminosity flared up to about 10,000 times the present-day luminosity of the Sun.: 它的亮度有几年一度达到了现在太阳亮度的一万倍左右。

2. Mount Battie without losing its definition would take on a blue luminosity.: 远处的巴蒂山沉浸在一派蓝茫茫的暮蔼之中,轮廓朦胧.

3. Astronomers tacitly assume that stars of the same luminosity and color all have the same mass.: 天文学家心照不宣地默认,光度和颜色都相同的恒星具有相同的质量.

4. The cloud should then have an infrared luminosity thousands of times the sun's bolometric luminosity.: 云的红外光度应为太阳热光度的几千倍.

5. The quasars cannot shine for longer than a few million years with their present luminosity.: 在几百万年以后,类星体将不可能具有他们今天那样的发光度.