Noun:
-
any element of the lanthanide series (atomic numbers 57 through 71)
- The color of Apatite is often due to the presence of rare earth elements.
磷灰石的颜色常取决于存在的稀土元素。
- The extent of beneficial effect of each element considerably depended on its affinity for oxygen.
各合金优良的抗氧化性与稀土元素对氧的亲和力密切相关。