GB/T 40495-2021船舶和海上技术船用起重设备可拆卸零部件一般技术要求标准
英文:Ships and marine technology—Loose gear for marine lifting appliances on ships—General technical requirement GB/T 4049...
英文:Ships and marine technology—Loose gear for marine lifting appliances on ships—General technical requirement GB/T 4049...