摘要
图样表达式用英语词首和希腊字母表示几何图形和图形要素,用算术符号表示图形要素之间的相互关系,用几何坐标表示图形的定位和尺寸大小,用代数形式并顺序排列。在一个表达式中可同时标明图形的定位坐标、几何形状、尺寸要素及相关附注。附注可注释有关技术标准,如公差、粗糙度和标准件的标准号等。一个表达式就是一组零部件机械结构的组合标注,用若干个表达式就能描绘出一幅简明的机械结构图。
The graphic expression adopts the first letter of English and Greece to express geometry graphics and its elements; adopts arithmetic sign to express correlation of graphic factor; adopts geometric coordinates to express graphic orientation and dimension; adopts algebra format arranged with sequence. Coordinate, shape, size and related remarks can be marked within one expression. The remarks can note some standards, such as tolerance, roughness and code of standard parts. An expression is a combined mark to describe a part structure, and several expressions together could represent a machine structure.
出处
《工程图学学报》
CSCD
北大核心
2008年第3期134-138,共5页
Journal of Engineering Graphics
关键词
工程图学
图学语言
图形简化
图样表达式
engineering graphics
graphics language
graphic simplification
graphic expression
