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单词 mineral wool
释义

WordReference Random House Unabridged Dictionary of American English © 2024
mineral wool′, 
  1. Buildinga woollike material for heat and sound insulation, made by blowing steam or air through molten slag or rock. Also called rock wool. 
  • 1880–85

Collins Concise English Dictionary © HarperCollins Publishers::
mineral wool n
  1. a fibrous material made by blowing steam or air through molten slag and used for packing and insulation
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