数据池的每一列都会和一个类的属性通信。
Each column of the data pool corresponds to an attribute in the class.
31岁的列文曾经发明过一种技术来帮助互联网控制巨大的网络通信，当时他正飞往洛杉矶去组织公司迫切需要的新业务。
Lewin, 31, who had invented technology to help the Internet handle huge amounts of traffic, was flying to Los Angeles to drum up new business, which the company desperately needed.
介绍了系统的组成、列告警器、总造警仪设计和内部数据通信具体约定。
The system composition, line warning device, main warning device and inner data communication protocol were introduced.
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