a hard, black coal with high energy content, often referred to as hard coal

الإنجليزية - الإنجليزية

تعريف a hard, black coal with high energy content, often referred to as hard coal في الإنجليزية الإنجليزية القاموس.

Anthracite

الواصلة

a hard, black coal with high en·er·gy content, of·ten re·ferred to as hard coal