wangchun1939 发表于 2013-9-4 11:05:23

ISO 4628-7-2003

ISO 4628-7-2003 Paints and varnishes — Evaluation ofdegradation of coatings — Designation of
quantity and size of defects, and of
intensity of uniform changes in
appearance —
Part 7:
Assessment of degree of chalking by
velvet method


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admin 发表于 2013-9-4 11:10:55

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prettypoet9 发表于 2013-11-22 18:36:02

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wanderer1997 发表于 2014-4-17 17:25:28

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xxx40cr 发表于 2014-9-28 10:51:57

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flora90119 发表于 2015-3-3 17:13:59

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sch_jack 发表于 2015-11-23 16:23:09

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hwangjbo 发表于 2022-3-9 10:59:36

奇文共欣赏 疑义相与析
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