grey system decision-making的用法和樣例：
例句
- Grey relativity analysis is a theoretical method of grey system theory.
灰色關聯度分析是灰色系統理論的一種理論方法。 - Based on the AHP method and grey system theory, a grey hierarchy evaluation model is built up to evaluate energy conservation risks quantitatively.
運用層次分析法和灰色系統理論，建立從色層次分析評價模型對節能項目風險進行評估。
