charred coal

同根派生

I immediately recognized the charred traces of a fire.
我一下子就辩认出了水烧过后留下的焦炭痕迹。
The gas and petrol are examples of secondary fuels by which coal and oil may be more effectively used.
焦炭，煤气和汽油是更加有效地利用煤和石油的第二级燃料的范例。
The last possible result is that China's domestic demand for coking coal rising prices.
而最后可能出现的结果是中国国内焦煤需求上升，价格上涨。
The coke dry quenching plant and pneumatically selective crushing technology for cokemaking coal of the company are narrated in detail.
并对该公司的干熄焦装置和炼焦煤风动选择粉碎技术作了详述。