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.
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.
在冷端条件一定的情况下，提高砂轮转速能降低砂轮外圆面温度。
The results show that higher heat flux causes higher temperature on external circular surface of the grinding wheel.
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