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单词 critical density
释义

WordReference Random House Unabridged Dictionary of American English © 2024
critical density, [Physics.]
  1. Physicsthe density of a pure element or compound at a critical point. Cf. critical constant.

Collins Concise English Dictionary © HarperCollins Publishers::
critical density n
  1. the density of matter that would be required to halt the expansion of the universe
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