畴变具有一定速度，畴变速率对铁电体的非线性响应和频率相关响应等性质起到重要的作用。
The rate of domain switching plays an important role in the nonlinear behavior and properties that are frequency dependent.
在一定范围内，随着缓冲材料厚度的增加，碰撞时间与接触面积线性增加，最大加速度与损伤体积相应减小。
In a definite scope, the impact time and contact area are linearly increased while the maximum acceleration and bruise volume reduced with the increment of thickness of cushion materials.
为了提高线性定常系统的仿真精度和速度，提出了基于快速DCT的线性定常系统高精度仿真算法。
To improve the simulation precision and speed of LTI system, the highly precise simulation algorithm of LTI system based on Discrete Cosine Transform(DCT) is proposed.
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