yeemok 发表于 2016-12-10 09:37:20

ASTM D765-87 Standard Specification for Raw and Burnt Sienna Pigments

ASTM D765-87

Standard Specification for Raw and Burnt Sienna Pigments

This specification covers the pigments commercially known as raw sienna and burnt sienna.

admin 发表于 2016-12-12 21:07:06

谢谢您的分享,金币已奖励!
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