1) frequency-divided imaging
分频成像
2) frequency division
分频
1.
In order to further improve the output power and efficiency of high frequency power amplifier,a solution is proposed by means of using the single chip computer and CPLD frequency division which can develop radiofrequency carrier wave signal,and use double-power-supply class-D high frequency power amplifier as the power amplifier.
为了进一步提高高频功率放大器的输出功率和效率,提出了借助单片机及CPLD分频产生射频载波信号,并用双电源D类高频功率放大器作为功放的方法。
2.
Some main circuit s features,including the pulsed drive signals generation,logic frequency division and phase deviation, driver and singlerpole feedback are analyzed,and at last the results of experiment are given.
介绍了一种基于复杂可编程逻辑集成芯片(CPLD)的超声波电动机控制器设计电路,分析了各部分的电路结构及特点,讨论了驱动信号脉冲生成,逻辑分频移相,驱动控制和弧极信号反馈电路的设计,给出了实验结果的波形及结果分析。
3.
The advantages, principles and application methods of its frequency division and M/T measurement of speed are provided.
车用油耗器设计中测量电路的设计是关键技术,重点介绍了分频技术和M/T测速技术的优点、原理和在设计中的应用方法。
3) frequency-shared analysis
分频分析
1.
Seismic inversion based on logging trace frequency-shared analysis;
基于测井曲线分频分析的地震反演
4) frequency-division technology
分频技术
1.
Application of seismic frequency-division technology in the study of fan-delta evolution;
地震分频技术在扇三角洲演化过程研究中的应用
5) Tyrosine
分频荧光
1.
Study of Fraction Frequency fluorescence Spectra for Tyrosine;
酪氨酸的分频荧光光谱研究
6) frequency division collect4
分频提取
参考词条
补充资料：分频
将较高频率变为其整数分之一低频率的方法。早期采用混频法，后又采用张弛振荡与被分频率同步法，还可用锁相法。在高频技术中，可用隧道二极管分频。常用二进制触发器分频法，利用反馈可实现任意分数的分频。分频所得信号可保留原信号的稳定度。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。