Pakistan ' s coal, because of its high content of volatile matter and non - coking properties, is to be carbonized in a low temperature carbonization plant.
由于含有大量挥发物及具有非焦化性，巴基斯坦的煤需要在低温碳化装置中加以碳化。
2
Pakistan's coal, because of its high content of volatile matter and non-coking properties, is to be carbonized in a low temperature carbonization plant.
由于含有大量挥发物及具有非焦化性，巴基斯坦的煤需要在低温碳化装置中加以碳化。
3
Result showed total content of non-volatile acids decreased from 6 to 18 months, varied slowly from 18 to 30 months, and changed fast after 30 to 48 months.