【摘要】 CAD系统的成功在很大程度上取决于草图的制图效率。尽管几何图形信息的输入方法已相对成熟，目前尚没有一个广为认可的尺寸信息处理方案。本文分析了机械制固中的尺寸信息，提出了一个能快速对尺寸进行标注的方案。并在BYLCAD上初步实现。更多还原

【Abstract】 The success of CAD systems is becoming more dependent on the efficient drafting.Althoughinput schemes for geometry are now relatively mature,there is no universally recogizedrpesentation scheme for a product’s dimensioning system.In this paper, the analysis of thedriensions information in mechanical design,an effective method for dimensioning using intelligentknowledge is presented.The scheme is already put into prachtice in BYLCAD.更多还原