HART Protocol is an important reasoning of HART telecommunication realized by temperature transmitter. At first, the thesis gave a comprehensive analysis of HART Protocol Standard, and introduced each request of the data-link layer, application layer and physics layer.

Physical layer bandwidth of the data link is 1 056 Mbit/ s. Sustained throughput of 545 Mbit/ s was achieved at the data-link layer. The application layer throughput was 300 Mbit/ s.

链路物理层带宽达1056Mbit/s，链路稳定传输带宽为545Mbit/s，在应用层可得到300Mbit/s的数据传输率。

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We add the function of the per interface label space based on the source code, which enables to extend the LDP implementation to systems in which the data-link layer is ATM or FR.

我们在原实现基础上添加了每端口标记空间功能，使LDP实现可以向数据链路层为ATM或者帧中继的系统扩展。

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Therefore, a datagram receiver is designed for the monitor and categorization of any datagrams transfering in the fieldbus based on the Profibus data-link layer protocol.

因此在分析Profibus链路层协议的基础上，设计了一种基于CPLD的可随时监测总线上传输的报文并将其分类的Profibus-DP报文接收器。

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Pay attention to discovering of data-link layer equipments and hosts for small networks, and then attention to network layer for large networks as well as discover routers and subnets.

小型网络重视链路层设备和主机的发现，而大型网络侧重网络层以发现路由器与子网。

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It is an extension of Hash-based IP traceback, adds two components in SPIE, and combines traceback technology on network layer and data-link layer.

提出一种数据链路层追踪方法，它对基于哈希的IP追踪技术进行了扩展，在SPIE结构中增加两个组件，将网络层和数据链路层的追踪技术相结合。

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Further more, the paper discusses the discovery method of the Data-link layer equipments, such as switches or bridges, based on the analysis of their work principle.

并且在对数据链路层网络设备（交换机、网桥等）的工作原理进行分析的基础上，进一步讨论了该层网络设备的发现方法。

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The six layers are: wireless physical layer, wireless data-link layer, network layer, transport layer, mobile computing application supporting Environment, and application layer.

六个层次是：无线物理层、无线数据链路层、无线网络层、无线传输层、移动计算应用支撑环境和移动应用层。

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Some unique difficulties of data-link layer topology discovery make it fall behind the research of layer-3 network automatic topology discovery.

一些特有的困难使得数据链路层拓扑发现研究远远滞后于网络层拓扑发现，因而，也成为近些年来网络自动拓扑发现方面的一个研究热点和难点。

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The hardware design and the software realization of data-link layer control protocol of ALE are mainly discussed.

主要讨论了短波调制解调器硬件平台各个模块的设计与系统数据链路层ALE控制协议的软件实现。

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The data-link layer topology discovery becomes an indispensable part of a network automatic topology discovery system.

数据链路层拓扑发现也因此成为一个网络自动拓扑发现系统不可缺少的部分。

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The Implementation of Net-Charging Based on Data-Link Layer

基于数据链路层的网络计费的实现

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Research on TCP/ IP Security Strategy Model Base on Data-link Layer

基于链路层的TCP/IP安全策略模型研究

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The Implementation of Flow-Stat LAN Based on Data-Link Layer

基于数据链路层的局域网流量统计的实现

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Analysis of Data-Link Layer Protocol of 3~+ Network System

3~+网络系统数据链路层协议的分析

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Data networks service providers

数据网络服务提供者

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Debugging Algorithm Method with Win-tc in Data Structure Practice Class

数据结构上机实验中用win-tc调试算法的方法

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Design of Dynamic Data Binding Container Class

动态数据绑定容器类的实现

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Discussion about the Methods of Using Constructor Function to Construct Data Members of Class

C++构造函数构造类成员的方法剖析

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Sure the function and the technical architecture in some function after the detailed design as an example to realize the use of the business, the data model class and control of the way, describing the timing diagram to the kind of relationship between calls.

系统功能和技术架构确定后对用例图中的核心功能采用类图、时序图的方式进行详细设计，详细设计中描述了类及类之间方法的调用关系。

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If a column in the database is marked as being nullable, then the corresponding property in the data model class created by the LINQ to SQL designer will be a nullable type.

如果数据库中的一列被标志为可空，那么数据模型类相应的属性将是一个可空的类型。

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