In addition, another important means is to improve the efficiency of using oil and to avoid extra waste during the process of refinement.

此外，另一个重要的方法是提高使用石油的效率和在冶炼过程中避免额外浪费。

youdao

In addition, another important means is to improve the efficiency of using oil and to avoid extra waste during the process of refinement.

此外，另一个重要的方法是提高使用石油的效率和在冶炼过程中避免额外浪费。

youdao