GB 24418-2020中国海区可航行水域桥梁助航标志标准
英文:Aids to navigation on the bridge over maritime navigable waters, China GB 24418-2020介绍: 国家标准《中国海区可航行水域桥梁助航标志》由348(交通运...
英文:Aids to navigation on the bridge over maritime navigable waters, China GB 24418-2020介绍: 国家标准《中国海区可航行水域桥梁助航标志》由348(交通运...