As you process those bad comments, you will check historical information from the database to see if the comment came from previous bad bloggers (spammers).
您处理那些恶意评论时，将检查数据库中的历史信息，看看该评论是否来自此前的恶意博主。
This paper summarized the characters of historical data in process industry and defined the models of signal tag, process data and history database property.
总结了流程工业历史数据的特点，定义了信号点、过程数据以及历史数据库等的数据模型。
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