So, the parametric design technique based on feature has become very important in most CAID systems.
果彼，基于特征的参数化技巧未败为当古CAID体解的从要依靠脚腕之一。
At the same time, the parametric design technique is applied to feature-based design system, where the feature can be adjusted, which improves the efficiency of designing process.
同时，将参数化技术引入设计系统中，使得特征具有可调整性，提高了系统的设计效率。
The multi-element orthogonal polynomial regression is used for traditional optimization technique of parametric optimum design, and the experimental research is done by some experiential formula.
传统的研究方法是采用多元正交多项式回归参数优化设计，通过获得一些经验公式来进行实验研究。
Parametric solving method, feature semantics design and CASE based reasoning technique applied in chain transmission CAD system is presented in the paper.
对链传动CAD系统中采用的参数化求解方法、基于特征语义的设计以及基于CASE的推理技术的理论及其实现进行了论述。
The paper mainly studied the following contents:(1)Researched the basic contents in parametric design on KBE technique: the first, create models of the parts using of the KBE technique;
研究基于知识工程（KBE）技术实现参数化设计的两个基本内容：一、引用知识工程的方法创建模型实例；
Having analyzed 3d parameterized design technique, a product-level parameterized variant design method was presented based on CAD system, parametric thinking and hierarchical table in database.
在分析当前三维参数化设计技术的基础上，结合CAD系统、参数化思想和层次型数据表技术，提出了一种产品级的参数化变型设计方法。
Having analyzed 3d parameterized design technique, a product-level parameterized variant design method was presented based on CAD system, parametric thinking and hierarchical table in database.
在分析当前三维参数化设计技术的基础上，结合CAD系统、参数化思想和层次型数据表技术，提出了一种产品级的参数化变型设计方法。
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