0 Old HSK word(s):


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Hsk Characters:
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual




HSAB-Konzept (Hard-Soft-Acid-Base, deutsch: Harte-Weiche-Säure-Base-Konzept) (S, Chem)Pearson-Konzept (Eig, Chem) [ruan3 ying4 suan1 jian3 li3 lun4] 软硬酸碱理论