luminosityn.
英 luːmɪ'nɒsətɪ | 美 ,lʊmə'nɑsəti
中文n. [光][天] 光度；光明；光辉
词根词源
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.
关键词