求翻译：产品建模技术在产品开发及其过程管理中起到关键作用。虽然按照传统的成本计算方法计算，开发成本只占整个产品成本的5%，但它能决定产品总成本的70%[2, 3]。是什么意思？

Modeling technology in product development and product management plays a key role in the process. While the traditional cost calculation, development costs total product cost only 5%, but it can determine the total cost of 70%[2, 3].