“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	screw pitch screw press screw propeller screw pump screw pump completion string screw pumping system fault diagnosis technology screw refrigerator screw rotation screw ship unloader screw-socket screw spindle type turning gear screw theorem screw theory screw thread artefact screw thread metrology technique screw thruster screw unloader screw value screwy scribe scribed status scriber scribing method scribing positioning scrimber

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