构件失效的主要原因是：锁紧螺母的热处理工艺不当，止动垫电镀过程发生氢脆。
The results show that the failure is mainly attributed to the inappropriate heat-treatment technology of the locking nut and the hydrogen brittlement from electroplating of the stopping pad.
构件失效的主要原因是：锁紧螺母的热处理工艺不当，止动垫电镀过程发生氢脆。
The results show that the failure is mainly attributed to the inappropriate heat-treatment technology of the locking nut and the hydrogen brittlement from electroplating of the stopping pad.
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