镧系元素用英语怎么说？

镧系元素

例句

• The promotion effect of lanthanide - dopant was briefly discussed. 作者主要讨论了掺杂的镧系元素的促进效应.
• The possibility of its potential application is discussed for separation of actinon - lanthanon mixtures by ion exchange. 讨论了该离子交换法在分离锕 - 镧系元素上应用的可能性.