The theory of the first direct piezoelectric effect and the secondary converse piezoelectric effect is analyzed and confirmed by experiments.

进行了一次正压电效应、二次逆压电效应的理论分析与实验验证。

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Sensitive effect of environmental humidity on piezoelectric activity for the porous PTFE film and microstructure reason of the effect were also investigated.

本文还讨论了环境因素(如相对湿度)对这类功能膜压电活性的影响，分析了环境湿度对压电活性影响的结构根源。

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The investigation of ADP crystal attracts more attention for its multiplier effect of laser, electro-optic effect, piezoelectric effect and many other special features.

由于其具有激光倍频效应、电光效应、压电效应等多种特殊功能，所以关于ADP晶体的研究应用一直为人们所关注。

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Made of a material known as polyvinylidene fluoride (PVDF), this belt produces an electric charge whenever low-speed airflow passes over it and causes it to vibrate -- a result of that vaunted piezoelectric effect.

ENGADGET: Piezoelectric system turns your balmy breath into pungent power