In our experience, all brass and stainless steel general utility pumps give long life and top service.
根据我们的经验，所有的黄铜和不锈钢泵一般具有长期的使用寿命和一流服务。
Meanwhile, utility workers are extending an emergency power cable to the 40-year-old complex. That would allow a steady supply of electricity to run water pumps.
同时，公用事业工人们也在往这个修建了40年的建筑群铺设一条紧急电缆，为水泵的运转提供不间断的供电。
The utility model can prevent the discharge-orifice steel columns of the upper draining valve cover from cracking, increase the service life of oil-well pumps, and lower oil-production cost.
本实用新型可防止抽油泵在采油过程中上排出阀罩出油孔筋柱裂断，提高抽油泵的使用寿命，降低采油成本。
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