In many portable instruments, the noise and EMI of its switch power supply must be solved, the preferable method is that EMI power is reduced with spread spectrum frequency technique.

在许多便携式设备中，其开关电源的噪声和电磁干扰(emi)是亟待解决的问题，比较好的办法是利用扩频技术来减少EMI信号的功率成分。

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There have been warnings that the reduced spending on marketing could alienate some of EMI's recording artists.

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