论文部分内容阅读
国家标准GB4458.3-84机械制图 轴测图中规定了正二等轴测图(简称正二测)的画法,如图1所示。
National standard GB4458.3-84 Mechanical drawing Axial map provides for the second isometric (referred to as is two measurements) of the painting, shown in Figure 1.