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频率对比
1、comparison chart───对比图
2、cumulative frequency───[统计]累积频率，[电子]累积频数
3、frequency───n.频率；频繁
4、frequency polygon───[统计]频数多边形
5、frequency equation───频率方程
6、frequency range───频带; 频段；[电子][通信]频率范围
7、comparison───n.比较；对照；比喻；比较关系
8、rower comparison───赛艇比较
9、frequency generator───[计]频率发生器
1、Frequency comparison pilot series for the FDM systems in the toll communication network───长途通信网频分制XiTong频率比较导频系列
2、A frequency comparator compares the frequency of a reference clock with that of an output clock and outputs a frequency comparison signal.───频率比较器比较基准时钟和输出时钟的频率，并输出频率比较信号。
3、frequency comparator compares the frequency of a reference clock with that of an output clock and outputs a frequency comparison signal.───频率比较器比较基准时钟和输出时钟的频率，并输出频率比较信号。
4、We further propose a possible fast hybrid fractal encoding algorithm which combines existing fast search methods, statistical normalization and frequency domain comparison.───接着进一步提出一种可能的快速混合分形编码的算法，该算法将快速搜索方法、统计规范化、频域比较结合起来。
5、Methods High-frequency ultrasonic findings in 17 cases with PVNS were analyzed and a comparison between surgical and pathological results was made.───方法分析17例PVNS的高频超声表现，并与手术病理结果进行对照分析。