纺织品一些纤维素纤维(莱赛尔,铜氨纤维)及其共混物的定性和定量分析第2部分: 光学显微镜法对共混物进行定量分析Textiles-Qualitative and quantitative analysis of some cellulose fibres (lyocell,cupro) and their blends-Part 2: Blend quantification using light microscopy method