GB/T 37769-2019煤灰熔融性测定仪性能验收导则国家标准
英文:Guide for performance acceptance of determinator of coal ash fusibility GB/T 37769-2019介绍: 国家标准《煤灰熔融性测定仪性能验收导则》由TC42(...
英文:Guide for performance acceptance of determinator of coal ash fusibility GB/T 37769-2019介绍: 国家标准《煤灰熔融性测定仪性能验收导则》由TC42(...