缩写	英文解释	说明
CPC	Cost Per Click	按点击付费
CPT	Cost Per Time	按时长付费
CPM	Cost Per ThousandImpression	按展示付费
CPA	Cost Per Action	按行为付费
CPS	Cost Per Sales	按销售付费
CPL	Cost Per Leads	按潜在客户付费

RTB - Cookie Mapping -- https://developers.google.com/ad-exchange/rtb/cookie-guide?hl=zh-CN

参考资料

[1]. http://qing.blog.sina.com.cn/tj/653c2694330008bo.html
[2]. http://www.zhihu.com/question/20363959