In a practical example, a good result is obtained by the adoption of step-varying TD and predicting under the condition of sampled signal with noise and sampled time varying.

在一个采样时间不固定，且采样信号带有噪声的应用实例中，采用变步长的跟踪微分器加预报的方法得到了较好的结果。

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Any device would also need to be packaged in a way that made it practical - on the scale of an ultrasound scanner, for example.

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