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重复频；换帧频率
1、frequency generator───[计]频率发生器
2、repetition───n.重复；背诵；副本
3、frequency equation───频率方程
4、frequency range───频带; 频段；[电子][通信]频率范围
5、cumulative frequency───[统计]累积频率，[电子]累积频数
6、spaced repetition───间隔重复（学习技巧）
7、constant repetition───不断重复
8、intermittent repetition───间隔反复
9、frequency───n.频率；频繁
1、The results show that this amplifier has a good amplification effect on the pulse signal at a low repetition frequency.───结果表明，本脉冲光纤放大器对低频脉冲信号有很好的放大效果。
2、frequency of pulse trains was several MHz.───脉冲的基频为几兆赫兹。
3、but this mode is one Pulse Repetition Frequency (PRF) restriction.───但严格限制了对脉冲重复频率 (P R F)的选择。
4、its anti-sinusoidal jamming performance can be improved by pulse repetition frequency agility.───采用脉冲重复频率捷变技术可提高引信抗正弦干扰能力。
5、In practice this effect will occur with sources with high pulse energy and low repetition frequency.───在实践中这种影响将发生在源与高脉冲能量低重复频率。
6、Analyses of azimuth resolution, range migration, and factors of selecting pulse repetition frequency in spaceborne SAR are presented.───本文详细分析了高分辨率星载SAR的方位分辨率、距离徙动效应以及影响脉冲重复频率选择的因素。
7、The detection probability calculating method about low pulse repetition frequency (LPRF) PD radar against air vehicle is studied.───提出了低脉冲重复频率 (L P R F)PD雷达探飞行器目标的发现概率计算方法。
8、The topic of this article mainly research and design about LD pumped solid laser high repetition frequency Q-switch system.───本课题主要是针对LD泵浦固体激光器的高重复频率的电光调qXiTong的研究与设计。
9、Itspulse repetition frequency was 81.───脉冲重复频率平均为81。