root diameter of thread
英 [ruːt daɪˈæmɪtə(r) ɒv θred]
美 [ruːt daɪˈæmɪtər əv θred]
【机】齿根直径，螺旋纹底直径
双语例句
- By optimizing the radius of rounded corner at the root of thread and the structure of screw nut, and by changing the diameter of the root of thread, the concentrated stress was reduced, and stress distribution was improved for higher fatigue strength of the screw bolt.
通过优化螺栓螺纹根部圆角半径和螺母结构、改变螺纹根部直径的方法，缓解螺纹根部的应力集中，改善应力分布，实现提高螺栓疲劳强度的目的。