二维绘图系统
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Two-dimensional plotting system
以上为机器翻译结果，长、整句建议使用 人工翻译 。
国内在将二维CAD及其软件用于低层次的绘图很普及，但自主开发的三维CAD系统还未成熟。
The two-dimension CAD and its software of low layer are being used to draw is very popular, but the three-dimensional CAD system of independent development is still immature in domestic.
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