calculation of extended size

• 展开尺寸计算

calculation of extended size的用法和样例：

例句

1. In the condition of supplying drawing and designing for customers, the area should be calculated based on the total circular size of drawing, including cutouts and notches.
   提供图纸代为用户设计的，面积按图纸上总的外围尺寸计算，它包括开孔和切口部分。