大功率压电陶瓷要求材料不但在强场下有小的介质损耗，大的机械品质因数，同时兼备一定的压电常数和机电耦合系数。
High-power piezoelectric ceramics are desirable to combine a high mechanical quality factor(Qm) with a high piezoelectric constant(d 33) and a high planar coupling factor(Kp).
本文采用投影算子方法统一处理了一维扭析声子耦合气体的动力结构因数。
In this paper, we treat the dynamical form factor of one-dimensional kink-phonon gas as a whole by projection operator technique.
通过比较得出一组最佳的品质因数调节参数，并用于对光栅耦合系数高斯分布形状和耦合长度进行优化，最终获得了最佳的色散特性。
With this quality factor, the grating structure is optimized by selecting different coupling lengths and the distribution of coupling coefficient to improve its dispersion property.
通过比较得出一组最佳的品质因数调节参数，并用于对光栅耦合系数高斯分布形状和耦合长度进行优化，最终获得了最佳的色散特性。
With this quality factor, the grating structure is optimized by selecting different coupling lengths and the distribution of coupling coefficient to improve its dispersion property.
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