If transition at the shaft collar of a circular shaft adopting closed Angle will bring biggish stress concentration as bearing load.
圆轴轴肩处若采用尖角过渡，承载时将引起较大的应力集中。
In other words, an opening firstName element is never closed or an opening Angle bracket is missing.
换句话说，firstName元素总是缺少结束标识，或缺少开头的尖括号。
As for the problem the high current and the vibration of the torque, the double closed loops which include the current and power factor Angle are worked out.
对于电动机起动需要控制起动电流和转矩震动的问题，采用双闭环的控制方案，即电流闭环控制和功率因数角闭环控制。
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