The conventional mechanical scanning radar is gradually replaced by powerful electric scanning phased array radar in the application as an airborne radar due to its limited scanning speed.

传统的机械扫描雷达由于受其扫描速度的限制，在机载雷达的应用中已逐步被功能强大的电扫描相控阵雷达所取代。

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A monopulse limited phase scanning antenna system for the fire-control radar at X-band is presented in this paper.

本文介绍了一种可用于火控雷达的单脉冲有限相扫天线系统。

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Frequent item mining algorithms need to perform as little data stream scanning as possible while using limited size of memory.

数据流频繁项挖掘算法需要利用有限的内存，以尽量少的次数扫描数据流就能得到频繁项。

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But overall, consumer and business adoption of these technologies remains limited, due in part either to expense (high-end retinal scanning equipment can be costly) or lack of awareness.

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