• 1. semifusinite: 半丝炭煤素质 | 亚丝煤素质 | 亚丝煤素
• 2. coal rank semifusinite: 煤化半丝质体

• 1.Another characteristic of coal petrology is that transitional macerals, such as semivitrinite and semifusinite are relatively high.
  此外，一些过渡型显微组分，如半镜质体和半丝质体的含量也相对高。
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