目前，先进国家普遍采用硅芯塑管作为光缆通信干线及高速公路通信的管道。
Recent years Silicon Core Tube is widely adopted as pipes of optical cable backbones and expressway communications in developed countries.
系统硬件利用楼宇访客系统的布线网络，通信干线采用CAN总线，以提高通信的实时性和可靠性。
The hardware of the system is built on the layout network of the doorphone system, and CAN BUS is used as the trunk line of communication to improve the real time performance and reliability.
干线综合测试仪是对通信系统中的干线传输设备进行检测的仪器。
Trunk Tester is equipment that is used to test trunk transmission equipment of the communications system.
文中介绍了主要技术指标和组成方框图，并讨论了为保证干线通信可靠性所采取的技术措施。
The major performances and the block diagram are described, and some technical measures adopted to ensure reliability on the main path are also discussed.
供电干线通信系统。协议，数据集成和界面。
Mains communications systems. Protocol and data integrity and interfaces.
干线放大器是移动通信网络的重要组成部分，我们主要论述了干放监控系统的软件结构设计方案。
Trunk amplifier is a important part of mobile communication network. We mainly discussed the design plan of the software and hardware architecture of the trunk amplified monitoring system.
简要介绍了集传输与接入、干线与站场一体化的专用通信结构模式的全业务专用通信系统。
The paper briefly introduced a special communication system with full services, which combined transmission and access and integrated the trunk network with station and yard networks.
光纤传输也已成为当前通信，特别是干线通信的主要手段。
Optical fiber transmission has also become the major means of communication, particularly in the trunk communication network.
本文以城市干线作为出发点，对城市交通信号控制展开研究，重点对城市干线协调优化控制的方法进行了深入研究。
In this paper, the urban traffic signal control were mainly researched, the methods of coordinated optimization control for urban trunk road were discussed in depth.
增加通信能力，提高电话普及率，以区际干线光缆和城乡电话网为重点。
Increase the ability of correspond by letter, raise the telephone universality rate, take the area trunk line fiber optic cable and the city country telephone nets as the point.
系统地描述和分析总结了JR东日本的新干线信号通信设备的维修管理体制。
This paper systematically describes and analyzes the structure of maintenance management system of communication and signaling system of JR Eastern Japan Express Rail Transit.
在系统主干线通道上采用光纤通信方式，对于分支通信采用屏蔽双绞线以RS-485方式通信，并对网络体系结构作了详细的描述。
Optical fiber communication mode is adopted in main channels, RS-485 communication mode using shielding twisted pair lines is employed in branch channels, and detailed descri…
在系统主干线通道上采用光纤通信方式，对于分支通信采用屏蔽双绞线以RS-485方式通信，并对网络体系结构作了详细的描述。
Optical fiber communication mode is adopted in main channels, RS-485 communication mode using shielding twisted pair lines is employed in branch channels, and detailed descri…
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