这个是财务上用的指标吧？

  我只晓得cost benefit ratio

不是 啊！他是产业经济的术语。我只是知道他表一个产业产出的一定比例。请高人指点指点

cost disadvantage ratio(CDR),defined as average value- added per worker in plants supplying approximately the bottom 50% of industry value-added divided by average value-added per worker in plants supplying the top 50%.