| 摘要 |
<p>H. Fries-16(Revision) SUBMERSIBLE PUMP ARRANGEMENT A submersible pump arrangement including a vertically disposed pipe having an inlet at its lower end and an outlet at its upper end with a submersible pump unit being releasably connected to the inlet at the lower end only by help of gravity except during pump operation when the hydrostatic pressure difference created by the pump persists in the connection.</p> |
