英语词汇“double galaxy”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	double galaxy
释义	double galaxy double galaxy Two galaxies observed in close proximity. Physical doubles are spatially close pairs assumed to be in orbit about a common center of mass. They are known as a dumbbell galaxy when two elliptical galaxies of similar mass orbit each other in a common envelope. Optical doubles are widely separated pairs that appear close only because of a chance alignment along the line of sight. Although orbital motions cannot be directly observed, the relative radial velocities of galaxies in a gravitationally bound pair can be used to estimate their total mass, and hence their mass-to-luminosity ratio.
随便看	university of mary washington university of massachusetts university of massachusetts amherst university of massachusetts boston center for coastal environmental sensing networks university of massachusetts lowell university of massachusetts memorial health care university of massachusetts minuteman marching band university of massachusetts physics education research group university of mauritius university of medicine and dentistry of new jersey university of memphis, college of education university of miami university of miami clinical enterprise technologies university of miami filmmakers association university of miami school of medicine university of michigan university of michigan air quality laboratory university of michigan ann arbor university of michigan, ann arbor university of michigan-ann arbor university of michigan at ann arbor university of michigan business school university of michigan cancer center network university of michigan college of engineering university of michigan composite international diagnostic interview

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