摘要
系统地阐述了零件图尺寸的合理标注与设计和工艺的密切关系，总结了合理标注零件图尺寸的方法和规律。
The reasonable m arking of dim ensions on the detail draw ings and its close relationship w ithdesign and processing are system atically described, thereby the m ethods and rules of m arking thedim ensions are sum m arized.
关键词
设计基准
工艺基准
功能尺寸
零件图
尺寸标注
design datum
technology datum
functional dim ensions
non functional dim ensions
