- The process of chemical fertilizer production using coal as raw material TEXACO water coal pulp pressurized gasification technology and its key equipment in our country are presented.
- Production of water coal pulp and liquefied coal
- We need to replenish our stocks of coal.
- She piled on more coal before the fire go out.
- I add the coal on the flame continuously.
- They are ventilating the sap of a coal mine.