difference frequency信息详情
[电子]差频
frequency───n.频率；频繁
difference───n.差异；不同；争执
frequency generator───[计]频率发生器
frequency range───频带; 频段；[电子][通信]频率范围
difference maker───差异制造者
cumulative frequency───[统计]累积频率，[电子]累积频数
frequency equation───频率方程
frequency polygon───[统计]频数多边形
voltage difference───[电]电压差
finite-difference frequency-domain method with multifrontal algorithm is presented for two-dimensional cylinder scattering problems.───引入多波前算法，提出了结合频域有限差分法分析二维柱体的电磁散射问题。
formula of atmospheric refraction error of range measured by difference frequency delay method is presented.───给出了用差频延时法测距的距离折射误差计算公式。
A new ranging method based on quadric difference frequency is presented.───提出了一种基于二次差频测距的新方法。
Photonic crystals can radiate terahertz wave through difference frequency effect. But the conversion efficiency of this process is very low.───利用光在光子晶体中的差频效应，能够产生太赫兹辐射，但差频转换效率很低。
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 Application of the Finite Difference Frequency Domain Method in Two Dimension Periodic Guided Waves Structures───频域有限差分法在二维周期导波结构中的应用
Photographic sound record; difference frequency method for measurement of non-linear distortions───光声录音.光声录音技术中测量非线性失真的差音法
Improvement of Quadric Difference Frequency Base on Multiple Frequencies CW Ranging Radar───多频连续波雷达二次差频测距法的改进
The Application of Spin-Difference Frequency Controller in the Improvement of Elevator System───转差频率控制的变压变频调速器在电梯系统改造中的应用
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