Việt
vỉa than
vỉa than đá
Anh
coal bed
coal measures
coal seam
coal pit
pit coal
Đức
Steinkohlenflöz
Steinkohlenschicht
coal bed, coal measures, coal seam
coal bed, coal pit, coal seam, pit coal
Steinkohlenflöz /nt/THAN/
[EN] coal bed
[VI] vỉa than
Steinkohlenschicht /f/THAN/
[VI] vỉa than đá