兑水 发表于 2009-10-10 15:47:20

ASTM D 4542-1995 用折射计测定土壤中可溶盐含量和孔隙抽水...

D4542-95(2001) Standard Test Method for Pore Water Extraction and Determination of the Soluble Salt Content of Soils by Refractometer
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