Completion of the three phases is called a scan cycle.

完成上述三个阶段称作一个扫描周期。

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The method can provide flexible scan cycle which brings great freedom in SAR system designing.

该方法可以灵活安排扫频周期，从而使调频连续波SAR的系统设计具有更大的自由度。

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Additionally, a worm is designed to replicate as part of its life cycle, which in most cases means that it will scan, infect, and replicate over and over again, infecting more systems along the way.

此外，蠕虫被设计为能够作为自身生命周期的一部分进行复制，通常，这表示它将不断扫描、感染和复制，并在该过程中感染更多的系统。

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