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- The method for generating the second signal is put forward based on the period rule of the phase difference for two frequency signals with the frequency difference. 摘要利用两个有一定频差的频率信号相位差变化的周期性规律提出了一种秒信号产生方法。
- two frequency signals 双频信号
- two frequency signal 双频信号
- Results showed that the spectra in frequency domain could be divided into two parts: high frequency and low frequency signals. 结果表明,测量光谱在频域中的信号可被分为两部分:即低频信号和高频信号。
- The interval between any two frequencies having a ratio of2 to1. 倍频程频率比率为2比1的两个频率的间隔
- Can control audio frequency signals remotely,the volume can be modulated. 可对各路音频信号进行远程操控,音量可调;
- two frequency signaling 双频信号方式
- High-speed in-amps may be used in many video and cable RF systems to amplify or process high frequency signals. 高速仪表放大器可以用于许多视频和闭路射频系统的放大或者处理高频信号。
- Maritime and aviation navigation systems use low frequency signals to locate vessels or aircraft. 航海和航空界的导航系统使用低频率讯号来测量船只或飞机的位置。
- The interval between any two frequencies having a ratio of 2 to 1. 倍频程频率比率为2比1的两个频率的间隔。
- Note: Fast gating of sustained low frequency signals can result in “chattering. 注意:对相同的低频信号,设置噪声门过快会导致“喘息声”。
- Highly accurate detection of feeble and low frequency signals become realizable with the PWM sensing technique. 采用PWM检测技术,使微弱、低频信号的高精度检测成为现实。
- Dynamic characteristics of the portal frame are also identified from the WPT of low frequency signals. 低频的部分则可以进行门形构架的系统识别。
- Abstract : The two frequency method for measurring corrosion reaction resistance based on a. c. impedance and numerical integration has been proposed. 摘要 : 提出了基于交流阻抗和数值积分原理的二点频率法。
- An inspection of (4. 3-5) reveals that for a given K there are two frequencies. 由式(4.;3-5)可见;对于给定的K有两个频率。
- The authors apply the stereomicroscope and two CCD to simulate the eyes of human beings.The stereo video frequency signal was composed through the process of synchronous controller. 通过体视显微镜加上两路CCD视频信号模拟人的双眼,经过同步控制器的处理后,实现了立体视频的合成。
- An acousto-optic deflector(AOD)driven by a beat frequency signal generated two overlap gratings inside the acousto-optic(AO)crystal and diffracted the incident laser beam into two first-order beams. 该系统利用拍频信号驱动声光偏转器,在声光晶体中形成两个重叠的光栅,光源发出的激光以布拉格角入射,形成两束一级衍射光,经透镜聚焦形成光强按正弦规律分布的结构光条纹。
- In the paper,the authors analyzed polar motion data series recently released by IERS,and in combination with spectrum resolution,discussed two frequency of Chandler wobble. 分析了IERS新近公布的经统一归算的极移数据,结合频谱分析中分辨率的有关问题,进一步讨论了Chand ler摆动的双频现象。
- Scope of application: The product is fit for the transmission of radio frequency signals in radio equipment or in electronic equipment adopting similar technologies. 产品用途:产品适用于煤矿井下无线电通讯设备和采用类似技术的电子装置的有关无线电子设备中传输射频信号。
- A new two frequency laser alignment system is developed which consists of two Wollaston prisms with the same structure.One is for measurement;another for compensation. 介绍了一种新型自适应双频激光准直系统,该系统利用了两个完全对称的渥拉斯顿棱镜,一个作为测量元件,另一个作为补偿元件。