在地表，这种类似于低频声波的振动非常小，只相当于造成它们的垂直振动的幅度。

At ground level, such vibrations-akin to low-frequency sound waves-are very small, only about the size of the vertical motions that produce them.

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这些物种的垂直分布幅度有很大的差异。

The vertical distributed amplitudes of these species have large differences.

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与传统的垂直投影算法相比，新算法能在保证重建准确度的前提下大幅度的提高收敛速度。

And compared with traditional vertical projection algorithms, the novel simultaneous parallel projection can greatly accelerate the iterative process without losses of accuracy.

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