To use AUTOLISP language organizes some common symbol suitable for mine map drawing, to raise accuracy and speed of drawing.
使用AUTOLISP语言编制一些适合绘制矿图通用符号，提高绘图的精度和速度。
To use AUTOLISP language organizes some common symbol suitable for mine map drawing, to raise accuracy and speed of drawing.
使用AUTOLISP语言编制一些适合绘制矿图通用符号，提高绘图的精度和速度。
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