Road restraint systems - Part 4: Performance classes, impact test acceptance criteria and test methods for terminals and transitions of safety barriers.
道路约束系统.第4部分:安全护栏终端和过渡的性能等级 冲击试验验收标准和试验方法

2002-04-30

Road restraint systems - Part 4: Performance classes, impact test acceptance criteria and test methods for terminals and transitions of safety barriers; German version ENV 1317-4:2001
道路约束系统.第4部分:安全栅终端和过渡的性能等级 冲击试验验收标准和试验方法；德文版ENV 1317-4:2001

2002-04-01

Draft Document - Road restraint systems - Part 4: Performance classes, impact test acceptance criteria and test methods for transitions of safety barriers; German version prEN 1317-4:2012
文件草案——道路约束系统——第4部分:安全栅过渡的性能等级、冲击试验验收标准和试验方法；德文版prEN 1317-4:2012

2012-07-01

Global maritime distress and safety system (GMDSS) - Part 4: Inmarsat-C ship earth station and Inmarsat enhanced group call (EGC) equipment - Operational and performance requirements, methods of testing and required test results
全球海上遇险和安全系统（GMDSS）.第4部分:国际海事卫星-C船用地球站和国际海事卫星增强型群呼（EGC）设备.操作和性能要求、试验方法和要求的试验结果

2024-02-20

Global maritime distress and safety system (GMDSS) - Part 4: Inmarsat-C ship earth station and Inmarsat enhanced group call (EGC) equipment - Operational and performance requirements, methods of testing and required test results
全球海上遇险和安全系统（GMDSS）.第4部分:国际海事卫星-C船用地球站和国际海事卫星增强型群呼（EGC）设备.操作和性能要求、试验方法和要求的试验结果

2024-02-20