In Venezuela Avicennia nitida is used as mining props telegraph and transmission poles .

在委内瑞拉，Avicennia nitida用作矿柱、电话线杆和 输电线杆。

Advisory Committee on International Telephone and Telegraph ( CCITT ) ( now ITU-T ) in 1988 to accept the concept of the SONET and SDH renamed . Applies not only to make it also applicable to fiber-optic microwave and satellite transmission system of the Common Technical .

国际电话 电报咨询委员会（CCITT）（现ITU-T）于1988年接受了SONET概念并重新命名为SDH，使其成为不仅适用于光纤也适用于微波和卫星 传输的通用技术体制。

Telegraph equations can be looked as cascade connection of two-port network of lumped circuit of transmission line is a hyperbolic partial differential equations .

传输线可以看作集中参数二端口网络的级联，其数学模型& 电报方程是一阶双曲型偏微分方程组。

Three-phase coupling transmission line equation is derived for the overhead transmission lines based on the distributed circuit theory and telegraph equation . The wave parameter relations between two-phase circuit transmission line equation and three-phase coupling transmission line are achieved .

基于分布参数电路理论，应用 电报方程，推导出架空输电线三相全耦合传输线方程，并确定了二相回路 传输线方程波参数与全耦合传输线波参数的关系。

Evaluation on running quality of automatic telegraph transmission in the Yellow River

黄河水文自动 测 报 系统运行质量的评价

By the late 20th century the telegraph had been replaced in most applications in developed countries by digital data transmission systems Based on computer technology .

20世纪晚期，在发达国家中， 电报的大部分应用已被用计算机技术的数字数据 传输系统取代。

This paper firstly introduces the theory of the calculation of crosstalk among lines including basic principle of Finite Difference Time Domain Method grid partition numerical stability and absorbing boundary conditions telegraph equation of transmission lines and the calculation of unit length parameter matrices .

论文先介绍了研究串扰问题的理论基础，包括时域有限差分法的基本原理、网格划分、数值稳定性和吸收边界条件以及多导体 传输线理论的 电报方程和单位长度参数矩阵的计算。