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词汇
external casing packer
释义
external casing packer
基本
例句
管外封隔器
The present invention relates to a method for well cementing assisted by grout inflatable external packer.
本发明涉及一种用水泥浆胀封管外封隔器辅助固井的方法。
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更新时间：2026/9/30 5:06:47