0 New HSK word(s):

1 Old HSK word(s): D N 浓度 * nong2du4 Konzentration,

臭氧浓度 [chou4 yang3 nong2 du4]

Ozongehalt (S)
低浓度 [di1 nong2 du4]

niedere Stoffdichte
浓度 [nong2 du4]

Konzentration, Dichte (S)
氢离子浓度指数 [qing1 li2 zi3 nong2 du4 zhi3 shu4]

pH-Wert (S, Chem)