在一定转速下，以流量为变量，也就是如果改变水泵的流量，则水泵的扬程、功率和效率等都随之而变化。
Under a certain speed in order to flow variables that is if the change of the flow pump the pump head power and efficiency of all subsequent changes.
最后在系统实验基础上，给出了PWM波形、驱动波形、在一定转速下的相绕组电流波形以及系统的动态特性，步卜作一了分析。
PWM waves of DSP , drive waves , the current waves of each phase in a speed and curve of speed trait are given and analyzed at the end of article.
在一定的螺杆转速下，温度越高，停留时间越长，聚酯熔体输送过程中齐聚物含量越高。
The higher the temperature and the longer the resident time was, the higher the oligomer content was during polyester melt trans - fer course at a fixed screw rotation speed.
应用推荐