The tutorial also assumes you know some key features of a map: distance, coordinates, and scale.
本教程还假设您了解地图的一些关键特性：距离、坐标和比例尺。
To draw the stock graph, I must change the scale of the dollar and day values into SVG view coordinates.
为了绘制股票图像，必须将美元和每日数据的尺度转化成svg视图坐标。
On the basis of output of flight imitate system, the driving signal of flight simulation is formed by coordinates transforming, scale limiting, signal washout and filter.
根据飞行仿真模块的输出，通过坐标变换、比例限制、信号洗出和滤波等，形成运动平台的驱动信号。
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