impregnated coke

例句：

1. 1. This type of coke is used in the production of steel.
   这种焦炭用于钢铁生产。
2. 2. The impregnated coke was used as a fuel for the furnace.
   这种浸渍焦炭用作炉膛的燃料。
3. 3. The impregnated coke was then heated and carbonized to produce graphite.
   然后，这种浸渍焦炭被加热并碳化以产生石墨。