Further improvements in drainage canals and pumping equipment in the older sections of the city were also made. These operated well until they were overwhelmed by Hurricane Katrina in 2005.

城市其他老城区的排水渠道和排水设备有有了进一步的提高，这些设施直到被2005年卡崔娜飓风淹没之前，一直运转良好。

youdao

Used in pumping systems to protect equipment from damaging pressure surges or waves caused by rapid changes of flow within the pipeline.

用在泵系统上，保护设备不会受到由于管线内流量变化而产生的压力波动或起伏的破坏。

youdao

This paper mainly focuses on the fluctuation of velocity and torque of the electromotor because of the variational load in the pumping unit equipment.

摘要抽油机中载荷变化大，易引起电动机转速和转矩的波动。

youdao