But the high frequency of sampling will result in the increase in data collecting, thus reduce the velocity of leaking detection.

但采样频率过高会增加处理的数据量，从而降低泄漏检测的速度。

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In shaking table model tests, dynamic displacement and velocity are always obtained by integration of measured acceleration because of the restricted condition of data sampling.

受数据采集条件限制，振动台模型实验的速度和动位移时程一般由实测加速度时程信号进行积分得到。

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If sampling length doesn't adapt rotative velocity, the results of calculation by FFT or periodogram analysis will lead to pseudo-periods, which distorts the principal value function terms.

若采样长度与回转速度不吻合，将会出现伪周期，使主值函数项中提取周期成分后的信号失实。

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