网络不习惯于用较大的数据块或较小的字节来表示数据，而习惯于以包为单位。
Networks tend to consider data not in large chunks, nor in tiny bytes, but in packets.
在不同的章节中，我们将会看到数据单位如何通过协议在给定的网络堆栈层来接收、传输。
In different chapters, we will see how data units are received and transmitted by the protocols that sit at a given layer in the network stack.
“帧”是一种数据单位，它在特定的网络中，在各主机之间传递。
A frame is the unit of data that travels between hosts on a specific network.
文章在介绍网络备份新观念的基础上，结合作者所在单位已经实施的网络数据备份工作，阐述了网络系统对备份的要求及备份方案的设计工作。
This paper introduces the new concept of the network data backup, and describes both the demand of the network system for the backup and the design of the scheme.
在总结多媒体教材网络通用播放平台编程经验的基础上，提出了基于数据库的以课件为单位的文件组管理方法。
Based on experience of developing of the multimedia course network plate, the authors put forward a method about management and wildly share of multimedia-course.
在计算机网络环境下，工作任务在多个人或单位之间的流转实际上将表现为信息或数据在多个人之间的传送。
In the distributed environment, tasks transferred among different persons and departments are information or data passed among participants according to the defined set of rules.
业务范围：桌面及网络应用程序，企事业单位门户网站，数据(库)系统，办公自动化。
Business Scope: Desktop and web application, enterprise portals, database system and office automation.
对数据网络的设计、建设、运行等单位有一定的指导作用。
It is available for design, development and operation of SPDnet.
对数据网络的设计、建设、运行等单位有一定的指导作用。
It is available for design, development and operation of SPDnet.
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