钢中的铈碳化物对钢的韧性和塑性都有改善作用，对钢的屈服点没有发现显著的影响。
The cerium carbide can obviously improve the plasticity and toughness of steels, but do not make noticeable effects on the yield strength of steels.
由于转子材料屈服点较低，在额定转速时，局部会出现塑性形变。
Because of the lower yield point of rotor material, the local plastic deformations are found during operation at rate speed.
屈服点是弹性变形区域到塑性变形区域之间曲线的过渡点。
The yield point represents the dividing line or transition from the elastic to the plastic region of the curve.
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