ICS 81.080 Q 40 GB 中华人民共和国国家标准 GB/T32177—2015 耐火材料中B,03 的测定 Determination of boron oxidein refractorymaterials (ISO 20178-1:2008,Determination of boron oxide in refractory products- Part l:Determination of total boron oxide in oxidic materials for ceramics, glass and glazes, ISO 21078-2:2006,Determination of boron oxide in refractory products Part2:Acid extractionmethodof determination of boron oxide in binder,MOD) 2015-12-10发布 2017-01-01实施 中华人民共和国国家质量监督检验检疫总局 发布 中国国家标准化管理委员会