“hydraulic expansion packer”的概念、定义、翻译、参考文献-科学参考

单词	hydraulic expansion packer
释义	hydraulic expansion packer Encyclopedia 工学桥塞释 hydraulic expansion packer水力扩张式封隔器通过使胶筒内部压力大于外部压力（即使油管压力大于套管压力）而扩张，封隔油、套管环形空间的封隔器。
随便看	volcanic formation structural map volcanic glass volcanicity volcanic landforms volcanic passive continental margin volcanic rhythm volcanic rifted margin volcanic rock volcanic rock geological map volcanic rock logging evaluation volcanic seismology volcanic structure volcanic tremor volcanism Volcano volcano Volcanoes of Kamchatka volcanogenic volcanogenic mineral deposit volcano hypothesis volcano island volcanology volcanos in China volcano-tectonic earthquake Volcán Barú

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