环比指数指通过把某一时期的数值与前一时期的数值相比，而不是与固定基期相比而得出的指数。
Chain index an index number derived by relating the value at any given period to the value in the previous period rather than to a fixed base.
"新华·银联中国银行卡消费信心指数"显示，6月份该指数为86.30，环比小幅下探0.09。
The Bankcard Consumer Confidence Index slid to 86.30 in June, down 0.09 points from May.
尽管凯斯·希勒全国房价指数及十大城市综合指数与去年相比有所上扬，但是截止到三月末的连续三个月这一指数环比连续下挫。
Although both the Case-Shiller national and ten-city indices are up year-on-year, the national index fell during the three months to the end of March.
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