coal liquefaction

• 煤的液化

coal liquefaction的用法和样例：

例句

1. The problem was one of liquefaction of the sandy soil.
   问题是沙质土壤的液化作用。
2. Mainly on the basis of microscopic investigation into the residual materials,the liquefaction behaviour of each maceral group is examined.
   对固体残渣进行了显微研究，讨论了各种煤岩组分的液化性能。