×

gravel envelope meaning in English

砾石包层
砂砾保护层
砂砾封皮

Examples

  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。

Related Words

  1. gravels
  2. gravel shoulder
  3. gravel shovel
  4. gravel wall
  5. loamy gravel
  6. pebble gravel
  7. pack gravel
  8. bound gravel
  9. gravel separator
  10. drift gravel
  11. gravel dust filter
  12. gravel dyke
  13. gravel envelope well
  14. gravel equivalent factor
PC Version

Copyright © 2018 WordTech Co.