GB/T 33317-2016塑料酚醛树脂六次甲基四胺含量的测定凯氏定氮法、高氯酸法和盐酸法国家标准
英文:Plastics—Phenolic resins—Determination of hexamethylenetetramine content—Kjeldahl method,perchloric acid method and h...
英文:Plastics—Phenolic resins—Determination of hexamethylenetetramine content—Kjeldahl method,perchloric acid method and h...