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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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。

youdao