In addition, we also obtained the lower and upper limits of the precise critical size of single-domain, and also its exact value in particular cases.

此外，还得到了严格单畴临界尺寸上下限的一个估计，以及在特殊情况下这种临界尺寸的精确结果。

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Meanwhile, there is an upper limit existing in frequency and the peak power of response will be greatly diminished only when the frequency exceeds its critical value.

同时，激励信号存在一个上界频率，当频率参数取值超过界值时，响应峰值迅速下降。

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