^pCollege;
of;
Science;
Air;
Force;
Engineering;
University;
Xi'an;
710051;
China;
^pKey;
Laboratory;
Electrical;
Insulation;
and;
Power;
Equipment;
Jiaotong;
710049;
^pMaterials;
Research;
(Key;
the;
Ministry;
Education);
无铅压电陶瓷; 非化学计量; 电气性能; 结构; 压电系数; 表观密度; 空间电荷; 晶粒尺寸;