有效到达率是指在特定的暴露频次范围内，有多少目标受众知道所传播的信息并了解其内容。
覆盖九江市区、庐山及周边九县，日覆盖超过18万都市主流消费人群，广告有效到达率高达93.7%。
Coverage of Jiujiang city, Lushan and the surrounding nine counties, covering more than 180,000 city at the mainstream consumer groups, advertising, effective arrival rate of 93.7%.
文中介绍了网络广告的主要形式，借鉴点击率和转化率，提出利用有效到达率来探讨网络广告真正到达有效受众的比率。
The paper introduces the main formats of online AD, taking CTR and CR for reference, and then discusses the proportion of effective accepter of online AD with the effective Arrival Rate.
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