[化] 硬煤
词型变化:名词复数形式 : hard coals

hard coal的用法和样例:

例句

  1. Soft coal burns with more flames than hard coal.烟煤燃烧时火焰较无烟煤多。
  2. We also supply blind coal and soft coal from China and Indonesia.煤炭产品主要是无烟煤与有烟煤等。
【近义词】

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