本文使用高阶方程深度偏移方法，并且在计算中采用了一种与差分运算等价的时移法解决了计算中出现的频散和振幅失真问题。
The depth migration with higher-order approximation by time-shift algorithm eliminates the frequency dispersion and amplitude distortion in the calculation process.
高偏移驱动器，可实现更大的动态范围、更好的低音效果和更低的失真度。
High-excursion drivers that allow for greater dynamic range, improved bass, and lower distortion.
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