In Estonia three types of shale tar have been used as alternatives to anthracene oil or carbolineum.

在爱沙尼亚，已有三种页岩焦油用作蒽油或氯化蒽油的替换物。

youdao

In Estonia three types of shale tar have been used as alternatives to anthracene oil or carbolineum.

在爱沙尼亚，已有三种页岩焦油用作蒽油或氯化蒽油的替换物。

youdao