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- multiple frequency oscillator 多频振荡器
- VFO? Variable Frequency Oscillator? 可变频率振荡器，变频振荡器?
- VFO? Voice Frequency Oscillator? 音频振荡器?
- A new-style audio remote tripper is presented,which adopts DTMF (Dual Tone Multiple Frequency)technology. 提出了一种新型的、用双音频编码实现的音频远方跳闸装置。
- A way to measuring the vector miss distance using echo signal from Multiple Frequency CW-Tracking Radar is described in this paper. 本文详细介绍了利用多频连续波测量雷达回波信号进行脱靶量测量的方法。
- A responsive multiple frequency ranging system is designed by utilizing digital phase discrimination,based on FFT,and phase double principle. 利用基于FFT的数字鉴相方法和自乘倍相原理设计了一种应答式侧音测距系统。
- An underwater acoustic communication scheme using time delay and multiple frequency modula-tion technique is presented in this paper. 研究了一种采用脉冲时延差和多频码元组合编码的水声通信技术。
- Multiple frequency CW radar has the virtues of high velocity and range accuracy,with the developoment of measureing radar in shooting range,it is paid more attetion to recently. 多频连续波雷达具有测速、测距精度高等优点,近年来随着靶场测量雷达改进和发展的需要,其研究又逐步受到人们的重视。
- If the phone call is from the monitor center then decode the Dual Tone Multiple Frequency (DTMF) sign and order the control abject to act according to the monitor center. 只有识别到是监控中心拨打进来的时候，才对监控中心发送来的双音多频信号进行解码，并按照指令自动驱动被控对象进行操作；
- Normal dispersion with negligible absorption or anomalous dispersion with small gain can be achieved at multiple frequency regimes by varying the sum of the relative phases. 我们通过改变相对相位之和可以获得多个频率域上的无吸收的正常色散或者表现增益特性的反常色散。
- intermediate frequency oscillator 中频振荡器
- twice horizontal frequency oscillator 双行频振荡器
- Quartz-Crystal Frequency Oscillator 石英晶体频率振荡器
- quartz crystal frequency oscillator 石英晶体频率振荡器
- Moreover, multiple frequency stimulation method can increase consumption of IC obviously and surface diffuse reflection method can improve surface emission coefficient of IC availably. 混和信号激励法能明显增大三极管放大电路耗散功率，特别是第一级耗散功率；增频激励法能有效提高IC耗散功率；表面漫射法能有效增大元器件的发射系数。
- In audio, a very low frequency oscillation often resulting from a positive feedback path in an amplifier system. 在音响设备中出现的振荡频率极低的低频振荡，常因放大系统的正反馈回路引起。
- This application note describes how DTMF (Dual-Tone Multiple Frequencies) signaling can be implemented using any AVR microcontroller with PWM and SRAM. 叙述了带有PWM和SRAN的AVR系列微控制器产生双音多频（DTMF）信号的方法。
- Universal Radio Frequency Oscillator 通用无线电频率振荡器
- Abstract The stiffness of a griddle body was enhanced using dynamic topological optimization under multiple frequencies constraints. 应用多频率约束下板结构加筋动态拓扑优化方法，提高了振动筛筛体的刚度。
- twice-horizontal frequency oscillator 水平双频振荡器
