若语言扩声系统临近不稳定状态工作，频移器可以有效地减少再生混响干扰。

If the public address system is operated below but too close to the instability condition the frequency shifter can reduce effectively the interference of the regenerative reverberation.

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放大器失真引起输入信号的频谱再生，这对相邻信道中的通信产生了干扰。

Amplifier distortion produces a dilation of the spectrum of the input signal (" spectral regrowth ") which causes interference to communications in adjacent channels.

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单相可再生能源并网发电系统是一非线性系统，受电网和环境的影响，系统存在较强的外部干扰和非线性不确定因素。

Renewable energy generation system connected to the single-phase grid is nonlinear. Affected by grid and environment, the strong disturbance exists.

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