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。
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