special communications

Digital trunking system, which supports one-to-one and one-to-many call, is a type of special mobile communication system which is used for dispatching and emergency communications.

而数字集群系统是专门用于指挥调度和紧急通信的专用移动通信系统，能够使系统内的用户进行一对一通信、一对多通信。

TETRA ( Terrestrial Trunked Radio) is a series of standards made by ETSI on digital radio trunking communications system. Many functions of TETRA are designed to meet the special requirements of police and other public safety organizations, which include information security.

由ETSI制定的无线集群移动通信标准&TETRA标准中的很多功能是为满足警察和其他公共安全部门的特殊要求而设计的，这些特殊要求中包含了安全方面的要求。

Realization of the special performance of insulation resistance of urban communications cable and measures for improvement

市内通信电缆绝缘电阻特殊要求的实现和措施

Mint Communications Director Christine Aquino says that when the final products emerged, it was a very special day.

铸币交流中心的主管克里斯廷`哎奎诺说当最终的产品问世时，那真实一个非常特殊的日子。

Build good rural roads for the sake of the people-special interview with the vice minister of Communications on rural road construction

修好农村路为民办实事&访交通部副部长冯正霖同志

With development of security industries and electronics technological, lots of special PTs are used to conduct real-time monitoring in the power line network, and wireless communications is used to communicate whit the monitoring center.

随着安防、电子等行业技术的发展，一些电力设施防盗系统中使用专用PT变压器对电力线网络的运行进行实时监控，并且采用无线通讯方式进行报警。