The elastic stiffness constants and piezoelectricstress constants of these crystals have been obtained.
给出了它们的弹性刚度常数和压电应力常数。
2
Scientists have long known about naturally occurring piezoelectric materials, which have the ability to transform electrical energy into physical stress and vice versa.
长期以来科学家一直对压电材料的性质产生浓厚兴趣，这些材料可以将电能转化成为物理压力，反之亦然。
3
The wires produce electricity when under mechanical stress, called the piezoelectric effect.