carbonizing by calcining

例句：

1. 1. The coal is being carbonized in the furnace.
   煤炭正在炉子里被碳化。
2. 2.The process of carbonizing wood is essential for making charcoal.
   木材的碳化过程对于制作木炭是必要的。
3. 3. The carbonized wood was used to make furniture.
   经过碳化的木材被用来制作家具。