self-purification的用法和样例：
词汇搭配
- natural self-purification capacity 天然自净能力...
- biological self purification 生物自净酌
- self purification 自净酌
- rate of self-purification 自净速率
- self-purification capacity 自净能力
- self purification process 自净过程
- effect of self-purification 自净效应
- self-purification ability 自清能力
- self-purification parameter 自净参数
- natural self-purification 天然自净化作用...
- biological self-purification 生物自净作用...
- mechanism of self-purification 自净机理
- self-purification constant 自净常数
