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单词 semibituminous coal
释义

WordReference Random House Unabridged Dictionary of American English © 2024
semi•bi•tumi•nous coal  (semē bi to̅o̅mə nəs, -tyo̅o̅-, semī-, sem′ē-, sem′ī-),USA pronunciation 
  1. Mininga coal intermediate between bituminous and anthracite coal in hardness, yielding the maximum heat of any ordinary steam coal.
  • semi- + bituminous 1855–60

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