CAD技术》是土地资源管理专业选修课，是专门用于计算机绘图设计工作的软件。
Technology of AutoCAD, a software used in mapping design, is one selective course for senior students …
与计算机辅助设计相比，绘图是一种更有效的思维方式。
Drawing is a more productive way of thinking than computer-aided design.
计算机绘图系统和体系结构很早就出现了，cairo的设计借鉴了PostScript和pdf模型的许多经验。
Computer drawing systems and architectures have been around for quite some time, and Cairo owes much of its design to the earlier PostScript and PDF models.
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