電偶極矩 [电－极－]

Jyutping din6 ngau5 gik6 geoi2
Pinyin diàn ǒu jí jǔ

Definitions (Wiktionary)
  1. noun
    electric dipole moment (a measure of the separation of positive and negative electrical charges within a system, that is, a measure of the system's overall polarity)