expanded packer

英 美
  • 膨胀式封隔器
  • expanded adj.展开的;扩充的;扩大的动词expand的过去式和过去分词.
  • packer n.包装者;包装机
    1. The contraction force will be produced in unsetting of hydraulic packer by lifting tubing string because of effect pressure and pumping and so on.
      采用上提管柱解封的液压式封隔器管柱,由于压力效应及泵抽等因素影响,将产生一定的收缩力。