Secondly, the Frequency Difference of Arrival (FDOA) Location System has b.
接着，本文还就到达频差定位系统进行了研究。
An automatic balancing head is introduced, in which a PM frequency difference motor is used.
设计了使用永磁频差电动机的自动平衡头。
This thesis makes a study of high accuracy time interval and frequency difference measurement techniques.
本文对高精度时间差、频率差测量技术进行了研究。
It can obtain mistuned frequency difference of blades by a modal test, and then get the mistuned parameters.
本文通过叶片模态试验获得叶片失谐频差，进而获得叶片失谐参数。
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。
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。
On the other hand, we give the condition of correctly solving range ambiguity and performance calculating formula of for stagger frequency difference;
另外，我们还给出了参差比相测距正确解模糊的条件以及参差测距下的性能公式；
The principles of common time interval and frequency difference measurement techniques are introduced, and performance of these techniques is analyzed.
对常用的时间差、频率差测量方法的原理进行了介绍，并对各种测量方法的性能进行了分析。
The time frequency difference between grain noise and defect signal provide a possibility for enhancement of signal-to-noise ratio (SNR) in ultrasonic testing.
晶粒噪声和缺陷信号的时频特征的差异，为提高超声检测的信噪比提供了可能。
The precision of the ultrasonic flowmeter with small tube diameter and frequency difference method is affected by several factors, so to gain more accuracy is difficult.
小管径频差法超声波流量计的测量精度受各种因素的影响，因而获得较高精度比较困难。
The heterodyne detection is used to detect the output signal frequency difference between the reference arm and sensing arm, which is caused by the temperature variation.
外差探测用来探测传感臂和参考臂由于温度变化引起的输出信号的频率差异。
Improved algorithm combines isotropic and anisotropic diffusion and USES the regional frequency difference to realize different iterative equation on the different regional.
改进的算法同时结合了各向同性和各向异性扩散，利用区域频率差异实现了在不同的区域使用不同的迭代方程。
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。
So this technique has high sensitivity which phase difference method has and is hardly affected by the variation of the sound speed of the fluid, just as frequency difference method is .
因而该方法具备了相差法检测灵敏度高和频差法受被测流体声速变化影响小的特点。
In the method, GPS is looked on as reference and the frequency difference between the Rb clock and GPS may be obtained indirectly, and the expensive high-resolution counter may not be needed.
该方法将GPS作为频率基准，间接得到了铷钟相对于与GPS的频差，避免了使用昂贵的高分辨计数器。
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。
On the receiving end, mainly studies the key technologies of Calibration frequency difference, Synchronization and adaptive equalization, of which adaptive equalization has been emphasized the most.
在接收端主要研究了频差校准、位同步和均衡等关键技术，其中重点放在了均衡技术上。
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。
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。
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；
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。
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。
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。
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