There is at least one piezoelectric element incorporated in the package or device and the piezoelectric element generates a source of voltage when it is activated.
存在被引入包装或器具中的至少一个压电元件，且压电元件在被 激活时产生电压源。
There is at least one piezoelectric element incorporated in the package or device and the piezoelectric element generates a source of voltage when it is activated.
存在被引入包装或器具中的至少一个压电元件，且压电元件在被 激活时产生电压源。
应用推荐