“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	method of ascent method of averaging method of balance method of balayage method of bibliography method of bisection method of boundary integration method of boundary layer method of boundary variation method of breath figure method of cessation and contemplation method of characteristic curves method of characteristics method of classification by professional activity method of coefficient comparison method of coincidence method of colloid preparation method of community classification method of comparison method of competitive selection of cadres method of complete induction method of complex integration method of compound interest method of computation method of confidence intervals

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