泊松比
一种材料属性：横向应变与轴向应变之比。大多数声学材料的泊松比在 0.29 到 0.34 之间。[无单位]
像铝这样的各向同性材料只有一个泊松比。像钛这样的正交各向异性材料则有三个泊松比。
泊松比受温度的影响相对较小。
泊松比会影响谐振器的调谐和均匀性。在其他条件相同的情况下，泊松比低的材料泊松耦合较弱，因此能提供更优异的谐振器均匀性。
Poisson's ratio
A material property: the ratio of transverse strain to axial strain. Most acoustic materials have a Poisson's ratio between 0.29 and 0.34. [No units]
An isotropic material like aluminum will have only one Poisson's ratio. An orthotropic material like titanium will have three Poisson's ratios.
Poisson's ratio is relatively unaffected by temperature.
Poisson's ratio affects resonator tuning and uniformity. A material with a low Poisson's ratio will have low Poisson coupling and will therefore give superior resonator uniformity, all other things being equal.