标题: ASTM D 589 – 97 R02 [打印本页] 作者: ygs67 时间: 2015-11-5 16:40:12 标题: ASTM D 589 – 97 R02
ASTM D 589 – 97 R02 Standard Test Method for Opacity of Paper (15° Diffuse Illuminant A, 89 % Reflectance Backing and Paper Backing) 作者: admin 时间: 2015-11-6 14:41:23