filter bed
noun [ C ] uk/ˈfɪl.tə ˌbed/ us/ˈfɪl.t̬ɚ ˌbed/
滤床，滤层
an area of stones and sand through which water flows to be cleaned
| 词汇 | filter bed |
| 类别 | 英译汉、英汉双解翻译词典 |
| 释义 | filter bed noun [ C ] uk/ˈfɪl.tə ˌbed/ us/ˈfɪl.t̬ɚ ˌbed/ 滤床，滤层 an area of stones and sand through which water flows to be cleaned |
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