The metals, 17 in all, are also used to make lasers, magnets, camera lenses, computer memory chips and more.
稀土金属共有17种，也被用于制造激光、磁铁、相机镜头、电脑存储芯片，还有其他各种用途。
The metals, 17 in all, are also used to make lasers, magnets, camera lenses, computer memory chips and more.
稀土金属共有17种，也被用于制造激光、磁铁、相机镜头、电脑存储芯片，还有其他各种用途。
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