青云翻译

Coal Quality control factors can be divided into two categories: the role of syngenetic and diagenetic epigenesis.

Main control factors of coal can be divided into two broad categories: syngenetic and diagenetic epigenetic effects.

The anthrax controlling factor mainly may divide into two big kinds: The syngenesis function and becomes the crag young man to affect.

coal quality control factors can be divided into two major categories: with the role and into rock and role.

Main control factors of coal can be divided into two broad categories: syngenetic and diagenetic epigenetic effects.