aggregative index number的用法和樣例：
例句
- The simplest form of a composite index is an unweighted aggregates index.
綜合指數最簡單的形式是不加權數的總計指數。 - The synthetic health value of Tonglu Fenshui River is got at the hose of analysis on every index by the layers analasis method.
采用層次分析法對桐廬縣分水江進行了全面的健康河流評價，得出各個指標的健康值，加總得到桐廬分水江河流健康綜合指數。
