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首先介绍了高分子压电材料PVDF的晶体结构及性能，在此基础上又介绍了高分子音频用传感器、超声波传感器、机器人用传感器等的应用情况．
First introduced the crystal structure and properties of PVDF piezoelectric polymer materials, on the basis of this also introduced the polymer audio sensors, ultrasonic sensors, robot sensors and other applications.