导致地震动空间变异性的原因主要包括几何不相干性效应和行波效应。

The spatial variation of seismic ground motions is produced primarily by the factors of geometric incoherency effect and wave-passage effect.

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上图中，一个房间用于工作，思考，谈话，吃饭，庆祝，放松……结果导致了不相干性最小化的失败。

Above: One-room for working, thinking, talking, eating, celebrating, relaxing,...... result of the failure of all irrelevancy - minimum.

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