nodular cast iron

The Measurement of Radius of Sphere Based on Neural Networks;

基于神经网络的球半径测量

This paper gives the method for drawing intersection of sphere wtih cone.

本文以球与圆锥相交为例,研究了相贯线及其特殊点的作图法；介绍了解析辅助法、AutoCAD辅助法和AutoLISP编程作图法。

According to the principle of constructing elliptical conical surface by the circles on a sphere, a T-joint inscribed in a sphere is designed.

根据“球面上圆构造椭圆锥面”的原理，设计了球内接三通接头。

A probe into elastic impact load of beam subjected to lateral impact of ball;

梁受到球碰撞时的弹性冲击荷载初探

Models of heat transfer of pipe and ball’s wall on both conditions of constant and variable thermal conductivity are displayed, so do some relative equations.

本文分析了在常导热系数和变导热系数条件下圆柱形管道和球形容器的传热模型,给出了有关计算式,利用MATLAB对传热过程进行了数值模拟,获得了相应情况下的临界热绝缘直径、外表面温度和散热量。