1)send a message back,发回信息2)downlink information,回传信息3)information recalling,信息回溯4)return message,返回信息5)Surviving Bit,回溯信息6)callback information,回调信息
用法例句
：Based on a discussion about the mechanism of integrated MIS, the authors developed a successful approach for information recalling , which can be widely used for back-searches in B/S MIS systems.
