实际上，我是用圆、弧和矩形之类的基本图形构建仪表盘的，而没有通过为仪表盘(或图形)指定数据的方式。
Instead of specifying the data for the gauge (or graph), I actually build the gauge out of graphics primitives such as circles, arcs, and rectangles.
本文提出了一种球面上基本几何元素的园弧投影变换方法，并建立了三轴及对应的二轴园弧投影体系。
This paper presents a method of arc projective transformation of the fundamental geometric elements on a sphere, and sets up an are projective system for three axial and two axial correspondently.
只要输入线路的基本参数和气象条件即可迅速计算出标准弧垂值。
In case that the basic parameters and climate conditions of the line are input, the standard sag can be calculated quickly.
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