The parallel-connection and variable-speed operation characters of the centrifugal pump groups are studied by conics fitting of the character curves in the high efficiency area.
通过对离心式水泵高效工作区的性能曲线进行二次拟合，分析了离心式水泵机组并联调速运行特性。
The efficiency of a parallel connection double-pump irrigation System is not only related to the break - down and recovery frequency but also to the operation and maintenance fashion of the System.
双泵并联灌溉系统的有效度不仅与机组故障率和修复率有关，而且与系统的运行方式及维修方式有关。
A parallel connection system of pump units pipeline system and working principle are presented.
介绍了典型的一用一备机组管路系统及其工作原理。
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