CK series Marine automatic telephone system is application for all kinds of vessels; It support automatic exchange service for auto telephone.
CK系列船用程控电话系统是为大、中、小型舰船提供整船内部电话服务的设备。
A fire alarm automatic system was introduced, it was developed with smoke sensor and telephone.
介绍一种火灾自动报警系统。该系统应用了离子感烟传感器和电话。
This paper introduces the automatic protection means of the channel in railway dispatching telephone system.
介绍了铁路调度电话系统通道自动保护的措施。
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