The characteristics of low specific speed centrifugal pump are introduced, and the grid generation method for impeller passageway and the governing equations of calculation are also expatiated.
简要介绍低比速离心泵特点，阐述计算的控制方程和叶轮通道网格划分方法。
The method of AC frequency-converting speed-governing of spinning screw was introduced in stead of DC speed-governing method.
介绍在纺丝螺杆挤压机的调速方法中，用交流变频调速代替直流调速。
We adopt mainly statistic and reckon method to the analysis of speed governing and energy savings of the whole time such as the whole year.
对于整时段的（如全年）调速节电分析主要采用统计加推算方法，在无法直接取得不调速（工频）参数对比的情况下，误差结果可能较大。
We adopt mainly statistic and reckon method to the analysis of speed governing and energy savings of the whole time such as the whole year.
对于整时段的（如全年）调速节电分析主要采用统计加推算方法，在无法直接取得不调速（工频）参数对比的情况下，误差结果可能较大。
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