| 摘要 |
<p>Abstract 5 The invention relates to a multistage centrifugal pump assembly with at least two impellers (2, 6), wherein two impeller groups (4, 8) which are consecutive in the flow direction and each with at least one impeller (2, 6) are present, wherein backflow channel (24) which connects the exit side of the first impeller group (4) to its entry side is present in a first impeller group (4). Fig.2</p> |
