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单词 supergranulation cell
释义

WordReference Random House Unabridged Dictionary of American English © 2024
su•per•gran•u•la′tion cell′  (so̅o̅′pər gran′yə lā′shən),USA pronunciation [Astron.]
  1. Astronomyone of a number of large convection cells in the photosphere and chromosphere of the sun, each having a diameter of 10,000–20,000 mi. (16,000–32,000 km) and lasting longer than a day. Also called su′per•gran′u•la′tion. 
  • super- + granulation 1970–75

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