GB/T 39375-2020.Leather-Physical and mechanical tests-Determination of dimensional change. GB/T 3937...
GB国家标准
GB国家标准
GB国家标准
GB/T 39375-2020 皮革 物理和机械试验 尺寸变化的测定
GB/T 39375-2020.Leather-Physical and mechanical tests-Determination of dimensional change. 1范围 GB/T ...