GB/T 36128-2018珠宝贵金属产品质量测量允差的规定国家标准
英文:Regulation of mass measurement permissible errors for jewelry and precious metal products GB/T 36128-2018介绍: 国家标准《珠宝贵...
英文:Regulation of mass measurement permissible errors for jewelry and precious metal products GB/T 36128-2018介绍: 国家标准《珠宝贵...