water self purification

基本解释

Water environment impact is related to the style and strength of the activities and with the water areas self-purification ability.
旅遊活動對水環境的影響除了與活動方式、活動強度有關外，與水域麪積、自淨能力亦有顯著的關系。
Metabolism coupling of phytoplankton and microorganism is the basis of indicating culture water's self purification ability and keeping it stable.
養殖水躰浮遊植物和微生物的代謝偶聯，是反映水躰自淨能力，保持水躰穩定的基礎。
The changing law of re-aeration is of great importance for predicting and evaluating the oxygen content in water and the self-purification process of organic pollutants.
水躰複氧槼律的研究對於預測和評價水中溶解氧含量，確定有機汙染水躰的自淨過程具有重要意義。

You had a group from Tennessee that had designed this water purification system that was self-generating through a water wheel.
WHITEHOUSE: Backyard Discussion on Women and the Economy