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高斯束是波动方程在特定射线附近的高频渐近解。
Gaussian beam is the asymptotic solution of wave equation concentred at the central ray.
从这一导出过程可以清楚地看出高斯束相干场附加位相差的成因及其物理意义。
From the derivation, cause and physical significance of the extra phase difference of the coherent field of Gaussian beams can clearly be seen.
因此，高斯束谐振系统对高频遗迹引力波的频率和传播方向具有良好的选择效应。
Therefore, GBRS have a useful selective effect with respect to the frequency and propagation direction of relic HFGWs.
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