filter bed 过滤层 ; 滤层 ; [环境] 滤床
sand filter bed 砂滤床 ; 砂滤层
rapid sand filter bed 快速滤清器
bio-filter bed 生物滤床
media filter bed 介质过滤床层
trickling filter bed 散水滤床
activated-charcoal filter bed 活性炭过滤床
Hydrophyte Filter Bed 水生植物滤床
sand-filter bed 沙滤层
siphonage filter bed 虹吸滤池
The functions of the hydrophyte filter bed(HFB) for improving source water quality were surveyed in terms of microcystin and trace organic pollutants.
从对藻毒素和微量有机污染物的去除方面考察了水生植物滤床（HFB）在改善源水水质方面的效果。
Regenerate the softener before you use it. Use clean, chlorinated water to backwash the filter bed.
在使用前需要清洁软水器。使用干净的、氯化消毒水反复清洗过滤床。
The adsorption characteristics of phosphorus onto granular fly ash and its phosphorus adsorption ability as the material in filter bed for landscape water treatment were investigated.
研究了造粒粉煤灰的磷吸附特征，以及采用造粒粉煤灰为填料的滤床对实际景观水的磷去除效果。
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