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柯林斯词典

index number

• 1. N a statistic indicating the relative change occurring in each successive period of time in the price, volume, or value of a commodity or in a general economic variable, such as the price level, national income, or gross output, with reference to a previous base period conventionally given the number 100 指数; 反映一段时间内特定商品价格、国内收入等经济变量相对前一阶段的变化[statistics]

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