英语词汇sand and gravel filter怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

短语

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
A metal filter assembly used to support and retain the sand placed during gravel pack operations.
在砾石充填作业期间放置的为支承和挡住砂子所用的由金属制成的过滤装置。
3
The process includes the waste purification from oil emulsion in Tilted-Plate Separator and the suspension separation in the downward-flow sand-gravel filter.
处理方法包括使用倾斜盘式分离器分离油乳化剂，使用下流式砂砾过滤器分离悬浮颗粒物。

单词	sand and gravel filter
释义	sand and gravel filter 简明释义砂砾石过滤器网络释义 1 ?砂砾石过滤器砂砾石过滤器短语 1 gravel and sand filter bed 砂砾滤床双语例句 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 A metal filter assembly used to support and retain the sand placed during gravel pack operations. 在砾石充填作业期间放置的为支承和挡住砂子所用的由金属制成的过滤装置。 3 The process includes the waste purification from oil emulsion in Tilted-Plate Separator and the suspension separation in the downward-flow sand-gravel filter. 处理方法包括使用倾斜盘式分离器分离油乳化剂，使用下流式砂砾过滤器分离悬浮颗粒物。
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