英和和英

出典:『Wikipedia』 (2011/06/02 23:22 UTC 版)

英語による解説

引用

Bank filtration is a type of filtration that works by passing water to be purified for use as drinking water through the banks of a river or lake. It is then drawn off by extraction wells some distance away from the water body. The process may directly yield drinkable water, or be a relatively uncomplicated way of pre-treating water for further purification.