由于不同矿山的地质条件等因素变化很大，矿井水的杂质成分与含量也有很大差异。

The components of the coal mine water is various obviously according the mine geologic condition.

youdao

由于不同矿山的地质条件等因素变化很大，矿井水的杂质成分与含量也有很大差异。

The components of the coal mine water is various obviously according the mine geologic condition.

youdao