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单词 pyrolusite
释义

WordReference Random House Unabridged Dictionary of American English © 2024
py•ro•lu•site  (pī′rə lo̅o̅sīt, pī rolyə sīt′),USA pronunciation n. 
  1. Mineralogya common mineral, manganese dioxide, MnO2, the principal ore of manganese, used in various manufactures, as a decolorizer of brown or green tints in glass, and as a depolarizer in dry-cell batteries.
  • pyro- + Greek loûs(is) washing + -ite1 1820–30

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