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middling coal例句_middling coal英汉例句_middling coal双解例句_歐米惠必应词典
歐米惠必应词典

middling coal

M 开头单词

常见例句

    雙語例句

  • The most reactive coal is in the middling coal-bank;
    含灰量低的中等變質程度的煤氧化活性最高；
  • The coals used included high-sulfur raw-coal, low-sulfur raw-coal and middling coal.
    所用煤種包括高硫原煤、低硫原煤、中煤。
    • 返回 middling coal