| 释义 |
稀有元素xīyǒu yuánsù自然界中存在的数量少或很分散的元素,例如锂、铍、钽、镓、硒、碲、氪、氩、氡等。{rare element; element that is rare or scattered in nature, such as lithium (Li), beryllium (Be), tantalum (Ta), gallium (Ga), selenium (Se), tellurium (Te), krypton (Kr), argon (A or Ar), and niton (Rn)} |