【摘要】 采用微分几何的方法得到圆柱螺旋线和圆锥螺旋线的长度 ,并进一步进行数学处理 ,给出了螺旋叶片展开图 ,为工程技术人员提供了较准确的计算依据。更多还原

【Abstract】 On the basis of the method of differential geometry,the dimensions of the conical and cylindrical threads are obtained.By means of the mathematical treatment,the development elevation for screw blade is given as a accurate calculational foundation to the engineeres.更多还原