为实现概念结构与公差并行设计，提出了基于功能表面的公差表示模型。
According to the requirements of concurrent design of conceptual design and tolerance design, tolerance representation model based on function surface was studied.
具有紧密公差的尺寸表示该零件必须恰当地与某些其它零件配合。
Dimensions given close tolerances mean that the part must fit properly with some other part.
研究了公差网络中的各公差对相应的旋量参数的约束不等式表示，从而构成了公差大小优化的不等式约束。
Screw parameters in VGCN specified by tolerances in TN are expressed as inequation, which is inequation constraint in optimization of tolerance values.
经实例验证，该模型能够表示功能表面的公差信息。
A case indicates that this model can represent the tolerance information of function surfaces.
用该方法表示的几何公差模型能合理地、有效地定义和解释当今的国家公差标准。
It is reasonable that the geometric tolerance model expressed by this method can effectively define and interpret the current national standard of tolerance.
公差，特定量度容许有偏差的部份。通常以(+)或(-)的形式表示。
TOLERANCE, The part of a specific measurement that is allowed to vary in dimension. Usually given in a plus (+) or minus (-) format.
白色方块表示产品重量在公差带内。
首先定义尺素和尺素链等概念，并在此基础上建立尺寸公差的尺素表示模型及其语义映射；
Firstly, the concepts of dimensional element (DE) and dimensional element-chain (DEC) are defined, and a geometric tolerancing model expressed by DE and its semantic mapping are also given.
公差的存储表示是公差分析和公差综合的基础，提出一种几何公差的计算机辅助表示方法。
Representation of tolerances is a basis for tolerance analysis and synthesis. Proposes a computer-aided representation method to represent geometric tolerances.
建立了三维变动几何约束网络的运动学模型的一般表示式，从而构成了公差大小优化的等式约束。
The general expressions of kinematic model of 3-dimensional VGCN are presented, which is the equation constraint in optimization of tolerance values.
基于公差的数学定义，系统地推导了各种类型公差的三维语义表示方法，准确完整地表示出了其语义；
The representation of tolerance semantics is systematically deduced based on its mathematical definition that can characterize the semantics exactly an…
基于公差的数学定义，系统地推导了各种类型公差的三维语义表示方法，准确完整地表示出了其语义；
The representation of tolerance semantics is systematically deduced based on its mathematical definition that can characterize the semantics exactly an…
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