本文提出了一种新的结构模态参数识别算法，称为直接特征系统实现算法(DERA)。

A new method called direct eigensystem realization algorithm (DERA) is developed for structural modal parameter identification.

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在所有的视觉艺术中，建筑对我们生活的影响最为直接，因为它在很大程度上决定了人文环境的特征。

Of all the visual arts, architecture affects our lives most directly for it determines the character of the human environment in major ways.

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屏幕上的每一个元素并没有直接或明显的结构性特征，都有可能被误解为导航控制。

Every element on the screen that has no direct semantic or obvious structural character can be misunderstood as a navigational control.

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