The method for the graphic input in a laser-induced thermal etching system and writing device is described.
介绍了激光蚀刻、书写设备中的图形输入方法，着重讨论了图像预处理、直线段识别和圆弧识别的数学方法。
A graphic operation method is devised which helps to settle the minimum input of capital for clearing the debts and the order of their clearing.
给出了清理三角债网络模型的图上作业法，以解决为清理三角债所需投入的最少资金以及清理顺序。
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