2) Constant expression expected
要求常量表达式
4) quantity expression
定量表达式
5) variable expression
变量表达式
1.
This paper presents a research on the representation method of assembly constraints in die & mold structure design, and discuss the solving approach of assembly constraints based on directed graph and variable expression.
研究模具结构装配设计中装配约束的表示方法 ,并讨论基于有向图和变量表达式的装配约束的求解方法。
2.
The structural design and assembling design method of standardized parts and components in CAD system for progressive die was presented,with emphasis on the application of variable expression-based correlated technology in the assembling design for standardized parts and components.
介绍了级进模CAD系统中标准件的结构设计及装配设计方法,重点叙述了基于变量表达式的关联技术在标准件装配设计中的应用,实现了设计过程中的联动修改,提高了模具设计效率和再设计能力。
3.
This thesis introduces the principle of involute, forms the involute of gear by variable expression, makes the profile by the parameters and creates the involute gear through feature operations in the Pro/ENGINEER.
在Pro/ENGINEER中 ,建立了生成渐开线的变量表达式 ,通过参数化建模的方法 ,生成齿轮的完整渐开线轮廓 ,采用特征操作技术生成了渐开线齿轮的三维模
6) cooling formula
冷量表达式
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