流量系数随矩形节流槽截面深宽比增大而增大，并随截面水力直径增大而有所增大。
The Cd increased with the depth-width ratio of notch cross-section, and increased to some extent with the hydraulic diameter of notch cross-section.
发热部是双螺旋切槽，在电流通过时可以减少其横截面积，因而发热部的阻值比冷端部的阻值大。
The hot zone is formed by cutting a double spiral slot which reduces the cross sectional area through which current flows, resulting in higher resistance than the cold end.
为此，采用在转子折断截面位置加工减荷槽的办法，使问题得到很好的解决。
For this reason, a trough is processed in rotor breaking sectional position. The problem has been well solved.
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