main points of design

• 设计要点

main points of design的用法和样例：

例句

1. The key points in designing the mechanism of automatic revolving de-threading are stated in detail.
   重点阐述自动旋转脱螺纹机构的设计要点。
2. Keys to technology and die design of stamp-ing of Al alloy profile have been introduced.
   介绍了铝合金型材在冲压加工时的工艺特点和模具设计要点。