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[国外标准] BS 2782:Method 552A:1999 Methods of testing plastics-Optical and colour properties,weathering-Determination of changes in colour and

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P:2007-12-01 08:16:46

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BS 2782:Method 552A:1999 Methods of testing plastics-Optical and colour properties,weathering-Determination of changes in colour and.rar

BS 2782:Method 552A:1999 Methods of testing plastics-Optical and colour properties,weathering-Determination of changes in colour and.rar

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