采用本组发明的BNKLT系无铅压电陶瓷，研制了中频陶瓷滤波器。
BNKLT lead-free piezoelectric ceramics invented in authors' group were used for making middle frequency ceramic filters.
采用本组发明的BNKLT系无铅压电陶瓷，研制了中频陶瓷滤波器。
BNKLT lead-free piezoelectric ceramics invented in authors' group were used for making middle frequency ceramic filters.
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