0 Old HSK word(s):



Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.



Hsk Characters:

HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual




notwendig & hinreichende Bedingung(en) (Math) [chong1 yao4 tiao2 jian4]