精确绘制立方晶系极射赤面投影图的新方法：平面几何法

A New Method of Accurate Drawing Stereographic Projection for Cubic System: The Plane Geometry Method

摘要: 本文提出了精确绘制立方晶系极射赤面投影图的新方法：平面几何法。介绍了该法的原理及方法，并用该法精确绘制了含有较高指数的立方晶系极射赤面投影图、立方晶系标准投影图。与传统方法相比，新方法既不需要角度的计算，也不需要用吴氏网进行角度的测量，简单方便，绘图精确。

Abstract: A new method, the plane geometry method, is developed for accurate drawing stereographic pro-jection of cubic system. The principle and method are introduced, and the new method is used to accurately draw a stereographic projection with the higher indexes for cubic system, and a standard projection of cubic system. The plane geometry method provides the following advantages over existing methods: neither calculating the angles nor measuring the angles with Wulff Net.