crest of thread
英 [krest ɒv θred]
美 [krest əv θred]
网络 齿顶; 螺纹牙顶; 齿顶,螺纹牙顶
双语例句
- The root of the external thread or the crest of the inner thread.
大径指过外螺纹牙顶或内螺纹牙底的圆柱面直径。 - Through metallographic analysis of the material, microstructure change and deformation mechanism of crest, flank and root of the thread along the layer depth direction were obtained.
结果表明，牙顶处金属材料受到丝锥棱齿的压力相对较小，并且金属流向牙顶两侧上方的区域时受到的阻力最小；