rare-element

常见例句

• The color of Apatite is often due to the presence of rare earth elements.
  磷灰石的顔色常取決於存在的稀土元素。
• The extent of beneficial effect of each element considerably depended on its affinity for oxygen.
  各郃金優良的抗氧化性與稀土元素對氧的親和力密切相關。
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