结果证明幼儿无任务P3波幅比任务p3波幅低，P3的引出与低概率刺激有关。

It was found that the non-task P3amplitude was lower than task P3 amplitude. This was related to the low probability of stimulation.

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通过大量正演计算，拟合出桩周土为黏土、砂土、粉土条件下缺陷程度与时域速度响应波形中入射波与反射波波幅比之间的关系式。

Using this software, the relationship between degree of defect and ratio of amplitude was studied, in which the influence of the characteristics of the soil around piles is taken into account.

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分析了相对密度比、深度比、波幅、波长因素对最大总作用力和总力矩的影响。

Moreover, the effects of density and depth ratio, amplitude and wavelength on maximal total force and total moment are analyzed.

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