音標發(fā)音英式音標 [?pl??ks ?k?n.st?nt]美式音標 [?pl??ks ?kɑ?n.st?nt]英式發(fā)音 美式發(fā)音 基本解釋普朗克常數(shù)。同根派生 Planck's constant相關詞英英字典劍橋英英字典 a number that never changes and that expresses the relationship between the energy of a photon and its frequencyPlanck's constant劍橋字典Planck's constant柯林斯字典