通过对大量公用数据集的测试以及在实际的雷达目标识别系统中应用，方法有效性得到了证明。
The validity of this method is proven by testing lots of common data sets and practical application in radar target recognition system.
本文介绍了公用和专用分组交换数据网的现状后，说明了开展标准的增值业务系统的重要性。
In this paper, after analysing the status on public and private PSDN, the significance of standard-based value added service systems is indicated.
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