牙菌斑 [－－－]

Jyutping ngaa4 kwan2 baan1
Pinyin yá jùn bān

Definitions (Wiktionary)
  1. noun
    dental plaque
    (syn.) 牙菌膜, 牙垢

牙菌斑 [－－－]

Jyutping ngaa4 kwan2 baan1
Pinyin yá jūn bān

Definitions (CC-CEDICT)
  1. dental bacterial plaque
Definitions (Wiktionary)
  1. noun
    dental plaque
    (syn.) 牙菌膜, 牙垢