root section meaning in English

根部截面
根部剖面
牙底剖面

The root section group for this
对象的根节组。
Considering effects of major factors on root section stresses , 2d and 3d dynamic finite element models are accurately established and then the history of both the stresses - loads at the test - points and the deflection - loads at the loading points are evaluated
综合分析影响齿根应力的重要因素的基础上，创建了精确的二维和三维动态有限元模型，计算出齿根危险截面测点的应力历程和受载点的变形历程。
After synthetically studying the effects of loading positions , rim thickness , circular pinion numbers and fillet radii of gear hob on root section stresses , a judging formula of plane stress and plane strain is proposed and verified , then 2d and 3d fem models are accurately established
系统探讨了加载位置、轮缘厚度、周向齿数的确定方法，分析了滚刀顶部圆角对齿根应力的影响，提出了两类平面问题的判据并予以验证。