淬硬层略有浮凸，并受到来自未淬火的基体的挤压力，这对于提高硬化带的接触疲劳强度是有利的。
The quenching strap is a bit higher than unquenched area, it is stressed by its neighborhood. This is beneficial to the wear resistance of quenched strap.
淬硬层略有浮凸，并受到来自未淬火的基体的挤压力，这对于提高硬化带的接触疲劳强度是有利的。
The quenching strap is a bit higher than unquenched area, it is stressed by its neighborhood. This is beneficial to the wear resistance of quenched strap.
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