Fourth-order-LongGe-coulthard-method

CAD数字批量加减，适用相对高程、绝对高程加减同样数字，便于CAD图件修改(CAD digital batch addition and subtraction, suitable for relative elevation, absolute elevation, add and subtract the same number, convenient for CAD map modification)

资源描述仿PhotoShop旋转图层的方式，设计一个用于旋转的矩形框。

常见定义的坐标系转换程序，方位角零到三百六十度，俯仰角零到一百八十度(Common defined coordinate system conversion program)

读取文本中的数据，然后应用Qpainter进行绘图。(Read the data in the text, and then apply the Qpainter to plot.)

利用mathcad计算齿轮啮合刚度系数，详实说明，自己编写(Calculated using the gear meshing stiffness coefficient mathcad, detailed instructions, write by myself)

This is a clock circuit which is my homework. It made in Eagle CAD program.

绘制磁滞回线，模拟磁滞回线产生的过程，便于理论分析建模(Drawing hysteresis loops to simulate the process of hysteresis loops is convenient for theoretical analysis and modeling.)

this file draw the nyquist diagram of multi input- multi output systems that they are such important kind of systems in control systems

二维绘图，包括直线，矩形，圆，多边形等绘制(Two-dimensional graphics, including lines, rectangles, circles, polygons drawn)

常用光瞳函数，矩形函数、圆域函数、正六边形函数、三角形函数的绘制(Commonly used pupil function, including rectangle function, circle function, hexagon function, triangle function)