DDS的主要优点是其高分辨率和高捷变速度，但是其较低的输出频率和较差的杂散性能制约了其应用。
The main merits of DDS are high resolution and fast frequency switching speed, but the defects of low output frequency and bad spurious performance restrict the application of DDS.
DDS的主要优点是其高分辨率和高捷变速度，但是其较低的输出频率和较差的杂散性能制约了其应用。
The main merits of DDS are high resolution and fast frequency switching speed, but the defects of low output frequency and bad spurious performance restrict the application of DDS.
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