低比速 meaning in English

low specific speed
low specific-speed

But there is still a difficult problem present in the low specific speed sewage pumps : with changeable operation points , the motor is often destroyed by overload , which restricts the application of the pump in many fields
但是低比速排污泵在工况多变的场合极易因过载而烧毁电机，这一问题一直没有得到很好的解决，这大大限制了排污泵的使用范围。
It is a vane pump with high head , small flow and low specific speed , which is smaller , flight and simpler in structure than positive displacement pump mulfistage centrifugal pump , and may handle liquid of high gas or steam content
该泵是一种高扬程，低比速的叶片泵，比容积式泵和多级离心泵体积小、重量轻、机构简单等优点，并可以输送气体或蒸气含量较轻的液体。
Under the premise of ensuring the pump ' s normal performance , and its non - overload characteristics and aimed at lowering the maximum brake horsepower , , the author also analysis the problem resulted from the saturation brake horsepower of the low specific speed sewage pumps and the solution to it . 3
推导了排污泵饱和轴功率特性产生的理论条件，导出了无过载排污泵设计的基本方程，在保证泵性能要求的前提下，同时实现无过载要求，讨论了低比速排污泵设计中存在的问题及解决的途径。