Search the dictionary A Chinese word or character, or English Draw a character Search 4 entries. zhònglízǐ 重离子 heavy ion (physics) zhònglízǐ 重離子 heavy ion (physics) yǐzhǒnglìzǐ 乙种粒子 beta particle (electron, esp. high speed electron emitted by radioactive nucleus) yǐzhǒnglìzǐ 乙種粒子 beta particle (electron, esp. high speed electron emitted by radioactive nucleus)