b)详细地画出所设计构型外部和内部的结构形状。 Draw structural shapes in detail c)选择基准和画尺寸线、尺寸界线及箭头。过仔细校核后,描深轮廓线,画好 剖面线。 Select dimension bases and finish dimensioning. Examine the views and then finish the trace drawing d)测量尺寸,定出技术要求,并将尺寸数字和相关技术要求标注到图中 Measure the dimensions and decide the technical notes then label them o the viewsb） 详细地画出所设计构型外部和内部的结构形状。Draw structural shapes in detail. c） 选择基准和画尺寸线、尺寸界线及箭头。过仔细校核后，描深轮廓线，画好 剖面线。Select dimension bases and finish dimensioning. Examine the views and then finish the trace drawing. d） 测量尺寸，定出技术要求，并将尺寸数字和相关技术要求标注到图中。 Measure the dimensions and decide the technical notes, then label them on the views