pumps in series

例句：

1. 3. pumps connected in a row: 串联式泵例句：1. In the water treatment plant, pumps are connected in series to ensure efficient water flow.
   在水处理厂，泵被串联连接以确保水流高效。
2. 2.The pumps in the pipeline were connected in series to improve the pressure.
   管道中的泵被串联连接以提升压力。
3. 3.The pumps in the system were connected in series to provide constant flow of water.
   系统中的泵被串联连接以提供持续的水流量。