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

space density

noun Astronomy

The frequency of occurrence of stars, particles, or other celestial objects, per specified volume of space.Spherical harmonics were fit to the pitch and phase distributions in order to obtain fluxes from which phase space densities could be computed....

If these are massive early-type galaxies their space density exceeds the expectations based on hierarchical clustering models.
Independent of one's redshift model, substantial changes in the luminosity function or space density of quasars and radio galaxies have occurred.

单词	space density
释义	space density noun Astronomy The frequency of occurrence of stars, particles, or other celestial objects, per specified volume of space.Spherical harmonics were fit to the pitch and phase distributions in order to obtain fluxes from which phase space densities could be computed.... If these are massive early-type galaxies their space density exceeds the expectations based on hierarchical clustering models. Independent of one's redshift model, substantial changes in the luminosity function or space density of quasars and radio galaxies have occurred.
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