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标题: ASTM D 985 – 97 R02 [打印本页]

作者: ygs67 时间: 2015-8-27 20:38:20 标题: ASTM D 985 – 97 R02

ASTM D 985 – 97 R02 Standard Test Method for Brightness of Pulp, Paper, and Paperboard (Directional Reflectance at 457 nm)

作者: admin 时间: 2015-8-31 10:31:55

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