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。

Another characteristic of coal petrology is that transitional macerals, such as semivitrinite and semifusinite are relatively high.

youdao

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。

Another characteristic of coal petrology is that transitional macerals, such as semivitrinite and semifusinite are relatively high.

youdao