chalcogen / ˈkæl kə dʒən, -ˌdʒɛn /

🎓大学词汇氯化物氯化石蜡氯化物晶体氯化钠

chalcogen 的定义

n. 名词 noun
  1. Chemistry. any of the elements oxygen, sulfur, selenium, tellurium, and polonium, which form the VIa group in the periodic table.