Decarburization shall be one of the four grades given in table 1.
脱碳是表1中给出的四个等级中的一个。
The primary reason for lowering the fatigUe life is decarburization.
指出， 氧化脱碳引起疲劳寿命降低是该扭轴失效的主要原因。
Is hardness tested on a surface that has been ground to remove decarburization?
硬度检测是否在去除了氧化皮的表面上进行？
And the higher temperature tempering is not the main reason for the decarburization.
另外研究发现高温回火并不是引起零件表面脱碳的主要原因。
And the higher temperature tempering is not the main reason for the decarburization.
另外研究发现高温回火并不是引起零件表面脱碳的主要原因。
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