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。
A 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。
The 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。
The realization mode of solving ambiguity for multiple frequency ranging usually has two kinds:quadric difference frequency and uneven dual frequency.
多频测距解模糊的实现方式通常有两种：二次差频和参差双频。
The finite-difference frequency-domain method with preconditioned conjugate-gradient technique is presented for two-dimensional cylinder scattering problems.
本文引入预条件共轭梯度法，提出了结合频域有限差分法结合分析二维柱体的电磁散射问题。
A finite difference frequency domain method (FDFD) is presented to analyze the propagation characteristics of waveguides with imperfect conductor and rough surface.
提出了一种基于图像处理算法和频域有限差分法相结合研究实际光子晶体光纤的数值分析方法。
The compact 4-component 2-D finite-difference frequency-domain algorithm (2-D CFDFD) is one of the effective methods to calculate the propagation properties of ideal guided wave structures.
四分量紧凑格式二维频域有限差分（2-DCFDFD）算法，是求解理想导波结构传输特性的有效方法之一。
To overcome the disadvantages of light intensity difference frequency stabilization, the dithering frequency stabilization for four frequency differential laser gyro is studied in this paper.
为避免传统光强差稳频方式的缺陷，提出了四频差动激光陀螺小抖动稳频方法。
Looking at the frequency difference, they realized that the shaking speed was connected to the radius of the animal's body.
通过观察身体动作频率的差别他们了解到，抖动的速率原来与动物身体的半径有关。
So, similarly in a case where instead we have a small energy difference, we're going to have a low frequency, which means that we're going to have a long wavelength here.
在这个例子里，能量差较小，我们得到的频率低，这意味这它的波长更长。
Again the performance governor only runs the highest available frequency, and you can see how great a difference this makes in power consumption by comparing the solid lines.
同样，performance调控器只在尽可能高的频率运行，您可以通过比较图中的实线看出这在电能消耗上导致多大的差异。
Those creatures have long had four-color vision, but a key difference is that their fourth type of color detector is in the high-frequency ultraviolet range, beyond where humans can see.
这些动物早已拥有四色觉，但关键的区别是，他们的第四种颜色位于高频的紫外线区域，在人类可视范围之外。
This paper presents calculation of frequency and phase difference of flow signals with spectrum analysis on basics of Fourier transform (DFT).
本文采用基于傅立叶变换(DFT)的频谱分析方法，计算流量信号的频率和相位差。
With its narrow operating frequency scope and low measuring precision, traditional phase difference measuring system can 't satisfy the requirement of modern phase array technology.
传统的相位差测量系统，因其工作的频段窄，测量精度低，已不能满足现代相控阵技术的要求。
The essential difference is that the spectrum analyzer, being designed for laboratory use, is designed to cover an extremely wide frequency range with widely adjustable tuning range, bandwidth, etc.
区别在于频谱分析仪被设计成是实验室使用，设计成是带有很大可调范围和带宽等并覆盖非常大频率范围的仪器。
This paper provides both vector control and frequency difference control to modulate the system of double motors transmission.
提出一种通过矢量控制和差频控制原理控制的双电机传动系统。
There was no difference in the frequency of hypotension or bradycardia between the groups.
两组中低血压和心动过缓发生的频率是没有区别的。
It mainly consists of harmonic generation, sum-frequency generation, difference-frequency generation, optical parametric oscillation and etc.
它主要由二次谐波产生、和频产生、差频产生、光参量振荡等构成。
The difference in genotypic distribution frequency between the groups, the correlation between the genotypes and the factors related to prognosis were analyzed.
比较各组中各种基因型分布频率的差异，以及各种基因型与乳腺癌预后相关因素间的关系。
In regard to the selection of media, the advertiser should select and combine the media with appropriate time and frequency according to the difference among products and media.
在媒体的选择上，要针对不同产品、不同媒体的特点进行媒体选择和媒体组合，并以适当的时间恰当的频率进行刊播；
The realization of location using the difference of doppler frequency is discussed, the formula for the location error is derived and its simplification form with data simulation is presented.
讨论了多普勒频率差定位技术的实现方法，推导了定位误差公式，并给出了实际使用时的简化而直观的形式，同时进行了数值模拟。
Conclusion There is no difference in frequency of CYP2A6 gene deletion between lung cancer cases and controls.
结论CYP2A6突变基因在肺癌组及对照组中的频率分布没有差异。
It integrates advantages of present schemes and avoids the unreasonable blocking for single unqualified parameter, such as the frequency difference, the phase difference or the voltage difference.
该方法综合了现有方案的长处，可避免单一参数(频率差、相角差或电压差)不满足就闭锁快切的弊端。
This means the difference of magnitude, frequency and phase of the voltages between the two sides of breaker must be small enough.
这就要求并列合闸时断路器两侧电压的幅值差、频率差和相角差都足够小。
However, there was no difference in the frequency between the main_panicles and the tilling_panicles of heading at the same season.
在同一季节抽穗开花的主穗和分蘖穗之间，其颖花内的多卵频率不存在明显差异，多胚苗频率的差异也不明显。
Adopting mutually orthogonal magnetic fields, the power tuning curve is utilized for stabilizing optical frequency, the frequency difference drift of double frequency is lower greatly.
采用正交磁场由功率调谐曲线实现稳频，可使双频频差的漂移量大大降低。
Adopting mutually orthogonal magnetic fields, the power tuning curve is utilized for stabilizing optical frequency, the frequency difference drift of double frequency is lower greatly.
采用正交磁场由功率调谐曲线实现稳频，可使双频频差的漂移量大大降低。
应用推荐