The test results have proved that the flow rate widely varied and the pump efficiency is high when the pump outlet line structure was altered and the outlet pressure was controlled in a special limit.

试验结果表明，改变泵出口管线结构，使泵出口压力在一定范围内工作时，流量变化大，而且泵效率较高，可以作为泵调整参数的一种手段；

youdao

By laser cladding, the sealing face of the in outlet valve parts in methylamine pump in urea production line has been strengthened.

采用激光熔覆技术对尿素生产线上的甲胺泵进排液阀零件密封面进行强化。

youdao