兑水 发表于 2009-10-13 16:38:48

ASTM D 4905-1999 固体状、浆糊状和粉末状植物鞣皮材料提取物...

D4905-99(2004) Standard Practice for Preparation of Solution of Solid, Pasty and Powdered Vegetable Tannin Extracts
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