beam-balanced pumping unit

例句：

1. 1.The beam-balanced pumping unit is designed to deliver water at a consistent rate.
   这种平衡梁泵机组设计用来以恒定速率输送水。
2. 2. The beam-balanced pumping unit was installed in the new hospital building.
   这个平衡梁泵机组被安装在新医院的建筑物里。
3. 3.The beam-balanced pumping unit is essential for maintaining the water quality in the area.
   这种平衡梁泵机组对于保持该地区的水质至关重要。