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单词 MK system
释义 MK system
[¦em´kā ´sis·tǝm]
ASTRONOMY
A system of classifying stars in which suffixes are added to the designations of the Harvard-Draper sequence to indicate luminosity, ranging from I for supergiants to VI for subdwarfs and white dwarfs. Also known as MKK system; spectral/luminosity classification; Yerkes system.
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