actinides的意思是锕系元素，在英文中常被缩写为actinide。在科学文献中，actinides通常指的是原子序数在89到103之间的元素，包括诸如鉳（Curium）、鉳（Einsteinium）、鉝（Livermorium）等元素。这些元素在元素周期表中属于放射性金属元素。
以下是一篇关于actinides的英文范文：
Actinide-based materials are becoming increasingly important in nuclear energy applications. These materials include actinide oxides, which are used in fuel rods for nuclear reactors, and actinide alloys, which are used in neutron-absorbing materials such as neutron shielding. These materials are characterized by their high melting points, high neutron absorption cross-sections, and long half-lives, making them suitable for use in nuclear energy applications.
In addition to their use in nuclear energy applications, actinide-based materials are also being studied for their potential use in medical applications such as radioisotope production and radiation therapy. Actinide-based radioisotopes such as samarium-153 and europium-147 are used in the treatment of cancer, and their use has been increasing in recent years. These isotopes are produced by the neutron irradiation of actinide-based materials such as samarium oxide and europium oxide, respectively.
Overall, actinide-based materials are becoming increasingly important in various applications, including nuclear energy and medical applications. Understanding their properties and potential uses is crucial for their safe and effective use in these applications.
actinides的意思是锕系元素。在核科学中，锕系元素是一组化学性质与碱金属和碱土金属相似的化学元素，其原子序数从89（镅）至103（超铀）。这些元素在自然界中的存在甚少，大部分都是人造的。
以下是一篇关于actinides的英文范文：
Actinide-based actinide-based actinide-based actinide-based actinide-based actinide-based actinide-based actinide-based actinide-based actinide-based actinides are a group of chemical elements that have properties similar to those of alkali and alkaline earth metals. These elements are found in nature in very small amounts and are mostly man-made.
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actinides的意思是“锕系元素”，是化学周期表中原子序数在95及以上的金属元素。在英文范文中最新的变化可能是在描述核科学或放射性物质时使用这些术语。