“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	black bean aphid black-bearded tomb bat black belt blackberry blackberry lily blackberry lily rhizome Blackbirding blackboard bold Blackboards black body blackbody blackbody calibration blackbody detectivity blackbody photocell Blackbody radiation black body radiation black-body radiation blackbody radiation black body radiation constant blackbody radiation law blackbody radiation responsivity calibration blackbody radiation source black body radiation transmission system black body responsivity blackbody responsivity

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