高职院校公共机房使用频率高，使用对象技术水平参差不齐，这给机房管理老师的日常工作带来了很大的不便。
In higher vocational colleges, there is a high using frequency in public computer room, and technical levels of users are different, which brought much inconvenience for computer teachers.
动目标显示雷达中通常存在多普勒频率所引起的“盲速”现象，常采用参差脉冲重复频率的方法来克服这种不利影响。
Blind speed phenomenon due to Doppler frequency usually exists in moving target indication radar. This disadvantage affect is avoided through staggered pulse repetition frequency method.
最后，分析了参差脉冲重复间隔步进频率信号的低截获概率特性。
Finally, the Low Probability of Intercept (LPI) of SPRI-SF radar signal is analyzed.
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