查询词典 difference frequency

In frequency measurement module, a method of high accuracy frequency measurement is i...

在频率测量模块中，采用多周期同步测量与量化延迟法相结合的高精度频率测量方法，使测量分辨率达到了0.1Hz，满足系统的要求。

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因为一个新站，搜索引擎一般是不会知道你的，提交完，然后就是接着更新文章，把自己的网站地址发到一些更新频率比较高的地方，这样搜索引擎才有可能爬到你的站上，而且对google的收录也非常有帮助，烟台seo站一天就被google收录得益于我在站长网写了一篇软文，站长网的更新频率很高，我发布的软文差不多两个小时吧就可以在搜索引擎中找到了，同时这也算是个外链吧，google搜索引擎很喜欢外链，假如你能在短期内搞到个高质量的外链，然后再提交下的话，一般google很快就能收录你的站了。

A phase advancer has a main AC-AC frequency conversion circuit consisting of thyristors.When sampling circuit detects the zero passage signal produced in rotor current of motor,main circuit controlled with advanced microcomputer controlling technique will change the AC voltage of 380V,50HZ into compensating voltage with the same frequency as that of rotor voltage and rotor current 90°in phase lay to achieve the goal to raise the power factor of the motor.

由可控硅构成的交变频主电路，在采样电路检测到电机转子电流产生的过零信号后，经过先进的微机控制技术控制主电路，将380V、50HZ交流电压转换成转子频率相同，相位滞后转子电流90°的补偿电压，达到提高电动机功率因数的目的。

According to resonant principle, a suitable resonant chamber is designed for intake system. The low frequency sound pressure level is decreased in the body. The high frequency noise is improved through damping air filter brace.

因此，采用共振消声的原理，设计了合适的共振腔，降低了低频噪声成分，并采用阻尼降噪技术，对空气滤清气的支架进行了处理，降低了高频噪声成分。

The allele frequency of ALDH2*1 between alcoholic cardiomyopathy group and alcohol dependent group was significantly higher than that in controls and the allele frequency of ALDH2*2 between alcoholic cardiomyopathy group and alcohol dependent group was significantly lower than that in controls.

嗜酒组和酒精性心肌病组ALDH2*1等位基因的频率高於对照(P.01)，ALDH2*2等位基因的频率低於对照组(P.01)。

Based on an introduction to the robust control of uncertain linear systems and a survey on the past and recent contributions to the related polynomial algebraic method, state space method and frequency domain method, this dissertation focuses on the robust control problem of uncertain linear systems in frequency and time domain.

本文首先就不确定线性系统的鲁棒控制问题作一扼要的介绍和概括，并分多项式代数方法、状态空间方法和频率域方法对其历史发展及其研究现状进行了比较全面的综述。

Frequency Frequency is the number of complete cycles per unit of time of any periodically varying quantity, such as alternating voltage or current.

中国吃的文化是由来已久，但怎样把中国吃的文化介绍出去，怎样用英文来表。。。

This paper analyses the frequency characteristics of the gear meshing and the signals due to amplitude and frequency modulation.

本文分析了齿轮传动的频率特性和它所产生的频率和幅值调制信号。

The time-frequency analysis to do 3D graphics source files, the program can draw signal frequency, and the ti...

有关时频分析做三维图形的源程序，该程序可以绘出信号，频率，以及时频三维图形，对信号的特性分析可以较好把握！

Also the intensity of the reconstruction image was studied in the angle of the influenced by the diffraction efficiency. The diffraction efficiency of the low frequency is lower than that of the high frequency.

另外还从物参比的角度分析了非线性曝光对再现光场的影响，即衍射效率对再现光强的影响，得出低频部分的衍射效率低于高频部分的衍射效率，较好的解释了再现像出现了边缘剪切效应的原因。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。