兑水 发表于 2009-9-26 09:03:47

ASTM D 778-1997 纸萃液(热萃取和冷萃取法)氢离子浓度(pH)的...

D778-97(2002) Standard Test Methods for Hydrogen Ion Concentration (pH) of Paper Extracts (Hot- Extraction and Cold-Extraction Procedures)
页: [1]
查看完整版本: ASTM D 778-1997 纸萃液(热萃取和冷萃取法)氢离子浓度(pH)的...