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- 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。
- 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。
- 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。
- 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。
- 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。
- The stiffness of a griddle body was enhanced using modal topological optimization under multiple frequencies constrains. 摘要 应用多模态约束下板结构加筋拓扑优化方法，提高了振动筛筛体的刚度。
- A new Chinese radioheliograph project (CSRFI) at multiple frequencies in the dm-cm wave range with 100 antennas of is proposed. 摘要在无线电波段进行射电观测是研究太阳的一个十分重要的手段，不同波段的无线电波反映出不同的特性和状态，其辐射频率与环境参数密切相关。
- Sparse-array Synthetic Impulse and Aperture Radar (SIAR) can isotropically radiate by employing multiple frequencies (synthetic pulse) and multiple antennas (synthetic antenna). 稀布阵综合脉冲孔径雷达(SIAR)采用多个频率信号同步全向照射工作方式,通过脉冲综合可以获得一定的脉压比。
- Simulation results show that the output power of microwave is enhanced and the phenomenon of multiple frequencies is also suppressed by adding an electron collector. 通过模拟还发现，对要求的频段，通过加入电子收集极的方法，可以有效地提高功率和压制倍频现象的发生。
- He varied the transmission frequency. 他变换了无线电传送的频率。
- Multiple Frequency Reuse Pattern for GSM System 多重频率复用方式应用于GSM系统的分析
- multiple frequency shift keying telegraph terminal 多频移频键控电报终端机
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- dual - tone multiple frequency (DTMF) 双音多频
