So the conventional magneto-optical recording median, rare earth-transition metal (Re-Tm) alloys, is limited, because of its small Kerr rotation in the region of short wavelength.
因此传统的磁光记录介质-稀土金属与过渡组金属的合金就表现出局限性，因为这种材料在短波长范围的磁光效应很小。
So the conventional magneto-optical recording median, rare earth-transition metal (Re-Tm) alloys, is limited, because of its small Kerr rotation in the region of short wavelength.
因此传统的磁光记录介质-稀土金属与过渡组金属的合金就表现出局限性，因为这种材料在短波长范围的磁光效应很小。
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