fire siren meaning in English

火警笛

City ' s trail communication transmission system mainly contains : key technology of city ' s trail communication transmission , choice of transmission module , choice of building transmission network and rectification in practical projects . this thesis has principally conducted research in the following aspects : 1 . it has rather thoroughly and systematically delineated the major contents in city ' s trail transportation communication system : transmission , business , wireless , specialist , monitor , broadcast , clock , power , cable , ground , auto ticket selling and checking , fas , scada , auto fire siren etc . 2
本论文反映的主要研究成果体现在以下几个方面： 1 、完整、系统地提出了城市轨道交通通信系统包含的主要内容：传输、公务、无线、专用、监控、广播、时钟、电源、乘客导乘及信息服务等，并提出各子系统的基本功能和要求以及与自动售检票、 fas 、 scada 、火灾自动报警等的技术接口。