其中QCD是指每一个WBE的质量成本进度（Quality Cost Design）；技术就绪水平（Technology Readiness Levels/TRL），1995年NASA提出TRL概念。
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Design of 3d models with CATIA V5 from the first concept to the final product according to functional, cost, quality and manufacturing requirements.
运用CATIA V 5设计3d模型，从最初的概念到最终产品，以达到功能，成本，质量以及生产的要求。
Work to provide a design that not only meets the customers criteria, but is also of high quality, cost effective, and manufacturable.
提供的设计不仅要满足客户的标准，而且还要是高质量的，低成本和可生产的。
Design plays a very important role in determining product's quality and cost.
产品的设计对产品的质量与成本起着非常重要的作用。
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