0 Old HSK word(s):
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Hsk Characters:
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Doppelbindung (S) [shuang1 lian4] 双链
Redukton, Reduktone (Verbindungen mit zwei Hydroxylgruppen an einer Doppelbindung) (S, Chem) [huan2 yuan2 tong2] 还原酮
13.19 Chemie Doppelbindung + Double bond + 双键 +