GB/T 38998-2020.Cut-size office paper- Measurement of edge quality.1范围GB/T 38998规定了裁切后办公用纸边缘质量的测定方法。GB/T 38998适用于裁切后的办公用...
GB/T 39366-2020.Leather-Tests for colour fastness- Colour fastness to crocking.GB/T 39366规定了用白色棉布在皮革表面进行往复式摩擦测定皮革表面耐摩擦色牢度...
GB/T 39452-2020.Leather- Physical and mechanical tests-Tests for adhesion of finish.GB/T 39452规定了皮革涂饰层与皮革之间(或涂饰层与涂饰层之间)的粘着牢度的...
GB/T 39364-2020.Leather- Chemical , physical , mechanical and fastness tests- Sampling location.4.1.2样品的选择4.1.2.1选择实验室样品的区域不应有明显的各种类型...
GB/T 39370-2020.Leather- Physical and mechanical tests-Determination of surface reflectance.GB/T 39370规定了皮革在可见光和近红外光下表面反射性能的测定方法。...
GB/T 39500-2020.Leather-Physical and mechanical tests-Determination of apparent density and mass per unit area.GB/T 39500规定了皮革视密度和单位面积质量的测定方法...
GB/T 39365-2020.Leather-Physical and mechanical tests-Determination of dry heat resistance.GB/T 39365规定了皮革耐干热性的试验方法。GB/T 39365适用于各种类型的皮...
GB/T 39373-2020.Leather- Tests for colour fastness- Colour fastness to solvents.GB/T 39373规定了皮革耐溶剂色牢度的测试方法。GB/T 39373适用于未使用和未被清洗...
GB/T 39374-2020.Leather- -Physical and mechanical tests-Determination of bending force.GB/T 39374规定了皮革弯折力的试验方法.GB/T 39374适用于各种类型的皮革弯折...
GB/T 39023-2020/ISO 1 1540:2014.Writing and marking instruments-Specification for caps to reduce the risk of asphyxiation.GB/T 39023规定了书写和记号工具降低窒息风险的...
