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- difference frequency sweep 差频扫描
- LFM is one of widely used methods of ISAR.Nonlinearity in frequency sweep has some effects on the quality of imaging. 摘要线性调频法是逆合成孔径雷达(ISAR)成像中一种常用的方法，在该方法中扫频非线性对成像质量有一定的影响。
- Different frequency resolution in human hear. 人耳对不同频率的分别率是不同的。
- Two different frequency, and there is no resonance. 双方不同频，因此也就无法共振。
- The corresponding frequency of the key parts of the poplar particle presswood pallet at maximal transmissibility was determined by frequency sweep test. 摘要采用扫频试验得出振动台对托盘关键部位最大传递率所对应的频率。
- The heterodyning principle is well known in nonlinear optics as difference frequency generation (DFG). 在非线性光学领域,超外差原理就是著名的差频产生(DFG)技术。
- The magnitude and phase of the composed balancing vector are adjusted by means of controlling difference frequency of current in inner stator windings. 通过控制内定子绕组电流频差信号以实现对平衡矢量幅值与相位的在线调节。
- Each of these pieces is a sine wave with a different frequency. 每个小部分是有着不同频率的正弦波。
- Radio Beijing broadcasts on a dozen different frequencies. 北京电台以十几种不同的频率进行广播。
- Frequency Sweep Meter and the Uses 扫频仪及其使用
- By change some pellucid parameters, this model can work in different frequency. 通过一些直观的参数设置，可使线圈模型适用于不同的频率范围。
- Various Buddha's names that teem in the sutra represent different frequency. 其内文均为各佛菩萨的名号，亦代表著各种不同的频率。
- logarithmic frequency sweep rate 对数频率扫描速率
- broadband frequency sweep jamming 宽带扫频式干扰
- Whether it rains or not makes no difference to me. 下不下雨对我来说都一样。
- To cause beating by superposing waves of different frequencies. 振动叠加不同频率的波以产生拍差，拍音
- Various wavelength conversion (WC) techniques are introduced, and two are chosen to be used in all optical transparent networks. These are four wave mixing (FWM) and difference frequency generation (DFG). 该文首先简单介绍各种波长变换技术;对比它们的优缺点;选出两种能用于未来全光透明网络中的波长变换技术:四波混频波长变换技术和差频波长变换技术.
- They differ in size but not in kind. 这些东西的区别只是大小不同而实质一样。
- A novel all-optical wavelength conversion (AOWC) based on the cascaded sum frequency generation (SFG) and difference frequency generation (DFG) in LiNbO?3 waveguides have been theoretically studied. 对基于级联和频差频非线性效应铌酸锂光波导新型全光波长转换器进行了理论研究。
- They tested his hearing with pure tones of different frequencies. 他们用不同频率的纯音测试她的听力。
