GB/T 2893.5-2020图形符号安全色和安全标志第5部分:安全标志使用原则与要求标准
英文:Graphical symbols—Safety colours and safety signs—Part 5: Principles and requirements for the use of safety signs GB/...
英文:Graphical symbols—Safety colours and safety signs—Part 5: Principles and requirements for the use of safety signs GB/...