DIN 53835-2 E:2023 纺织品测试 拉伸弹性行为测试 第2部分：单股和股线弹性纱线 在恒定延伸极限之间反复施加拉伸载荷 草案
Draft Document - Testing of textiles - Testing of the tenso-elastic behaviour - Part 2: Single and plied elastomeric yarns, repeated application of tensile load between constant extension limits