过滤层的英文

例句与用法

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1. In drainage of agricultural lands, a filter or gravel envelope is used to prevent the entrance of fine sand and silt into the drains .
   在农田排水中常常采用砾石或过滤层来防止粉细砂和泥沙进入排水沟。
2. It can be the filtration layer of the dikes , river canal , seacoast , concrete and retaining walls
   可以做堤坝，河渠，海岸，混凝土，挡土墙的过滤层。
3. The result gave the optimal filter particle diameter , layer thickness and filtration velocity
   根据实验结果，确定了最佳的过滤介质粒径、过滤层厚度和过滤速度。
4. Maintaining malt shell ' s intergrity and forming loose filter layer whose thickness may increase 15 - 20 %
   可保持麦芽壳皮完整，形成疏松高效的过滤层，滤层厚度可增加15 - 20 % 。
5. The structure characteristic sand control is in charge of being protected tube , base managing , internal and external network , filtering
   结构特点防砂管由保护管基管内外网过滤层等组成。