The complex frequency response function of the vibrating system is obtained by means of a new method.

并用一种新方法求取了该振动系统的复合频率响应函数。

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Transient state process solution of RLC-circuit can be solved easily by the analytic method of complex frequency field.

利用复频域分析法，方便地求解了RLC电路的暂态过程解，并对此解进行了讨论。

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A notch filter is proposed for single complex frequency estimation problem. It is represented as state-space equation model, which has good stability.

给出了一种用于单个复频率估计的陷波器传递函数，并将陷波器模型转换成状态空间模型，此模型具有很好的稳定性。

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Some investors use ETFs as a quick way of expressing their overall view on the market, while high-frequency traders use the funds as part of their complex arbitrage strategies.

ECONOMIST: The risks created by complicating a simple idea

Michael Kaback, emeritus professor of pediatrics and reproductive medicine at the University of California, San Diego School of Medicine, says trying to determine the frequency of carriers for Tay-Sachs among the Irish is likely to be complex.

WSJ: New Study Looks at Irish Risk for Tay-Sachs Disease