product design schemes的用法和樣例：
例句
- Lead fuzzy sets into the mechanical products design and set up a new evaluating method for its scheme.
將模糊數學理論引入機械設計中，建立一種新的產品設計方案評價方法。 - Therefore, LCED has become one of the effective design method for developing products of high quality and low cost.
它提供了一系列的產品設計質量和價值評價工具與手段，成為產生高質量低成本設計方案的有效方法之一。
