声学纤维中起主要作用的是一种名为“压电性聚合物”的物质。
The main thing at work in the fibres is a type of piezoelectric polymer.
当两个电极之间形成电场时，压电性物质便将电场转化为沿径向轴的机械压力，使纤维震动。
When an electric field is applied to the electrodes the piezoelectric material translates this into a mechanical strain along its radial axis, causing it to vibrate.
这个不均衡导致了塑料具有压电性，会随着电压的改变而改变形状。
That asymmetry makes the plastic piezoelectric: it changes shape when it encounters an electric field.
应用推荐