sand pack filter
常见例句
- Metal sand filter pack is considerable parts in fiber production. It can reuse via recycle.
组件金属砂是长丝生产消耗品，通过对金属砂的回收，可实现金属砂的多次再使用。 - 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。
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