人工增雨(雪)地面催化剂发生器选址安装技术要求人工增雨(雪)地面催化剂发生器选址安装技术要求Technical requirements for site selection and installation of ground-based catalyst generator on artificial precipitation enhancement
Electrical installations for lighting and beaconing of aerodromes - Technical requirements for aeronautical ground lighting control and monitoring systems - Units for selective switching and monitoring of individual lamps
机场照明和信标用电气装置.航空地面照明控制和监测系统的技术要求.单个灯具的选择开关和监测装置
2010-03-17
BS EN 50490-2008
Electrical installations for lighting and beaconing of aerodromes. Technical requirements for aeronautical ground lighting control and monitoring systems. Units for selective switching and monitoring of individual lamps
机场照明和信标的电气装置 航空地面照明控制和监控系统的技术要求 单个灯具的选择性切换和监控装置
2009-04-30
DIN EN 50490
Electrical installations for lighting and beaconing of aerodromes - Technical requirements for aeronautical ground lighting control and monitoring systems - Units for selective switching and monitoring of individual lamps; German version EN 50490:2008
机场照明和信标用电气装置.航空地面照明控制和监测系统的技术要求.单个灯具的选择性切换和监测装置；德文版EN 50490:2008
2009-04-01
VDE 0161-106/DIN EN 50490
Electrical installations for lighting and beaconing of aerodromes Technical requirements for aeronautical ground lighting control and monitoring systems - Units for selective switching and monitoring of individual lamps; German version EN 50490:2008
机场照明和信标用电气装置航空地面照明控制和监测系统的技术要求.单个灯具的选择性切换和监测装置；德文版EN 50490:2008