An object of the present invention is to provide a lead-free bismuth glass wherein decrease of the degree of accuracy of the patterning is prevented.

本发明的目的是提供能防止图案化精确度下降的无铅的铋玻璃。

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Also it introduces the features of BNT (Sodium bismuth titanate lead-free) replaced for traditional Piezoelectric ceramic speaker material (PZT) at last.

最后简单介绍了替代传统压电陶瓷扬声器材料(PZT)的无铅钛酸铋钠压电陶瓷扬声器(BNT)的材料特性。

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