查询词典 apparent frequency

Extract information based on the instantaneous features : In the center is one of the instantaneous rate of the power spectral density of the maximum, is a center to the absolute value of the instantaneous rate of the standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component absolute standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component standard deviation, In the center is one of the non-weak signal of the absolute value of the instantaneous frequency standard deviation, a signal to one of the instantaneous frequency of the power spectral density of the maximum, According to 16QAM and QPSK signals XI axis projection in the different performance parameters raised.

提取信号七个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值，零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，一个信号段的归一化瞬时频率功率谱密度的最大值，根据信号 QPSK 和16QAM在 XI 轴投影的不同表现，提出特征参数。

The frequency selecting absorbing effect of stratum medium on seismic wave keeps more information of medium characteristics in the low-frequency components.

地层介质对地震波的这种选频吸收作用使得在地震波的低频成分中保留了更为丰富的反映介质性质的信息。

Using direct calculation method can easily change in acceleration and deceleration time, maximum start frequency, maximum operating frequency in order to adapt to different processing conditions.

采用直接计算的方式可以方便的改变加减速的时间、最高启动频率、最高运行频率以适应不同的加工状况。

As walk-off angle and acceptance angle of beam limit the conversion efficiency and the tunable wavelength range of difference frequency generation, research include effective nonlinear coefficient, walk-off angle and acceptance angle as functions of wavelength, the relationship between conversion efficiency and acceptance angle, and the impact of crystals length on the process of frequency conversion.

由于光束的走离角、允许角限制了转换效率和差频调谐波长范围，研究内容还涉及了有效非线性系数、走离角和允许角与波长的关系，转换效率与允许角的关系，以及晶体长度在频率变换过程中产生的影响。

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。

Stand newly because of, searching engine won't know you commonly, refer, update an article then namely next, deliver oneself website address to a few newer frequency to compare tall place, on the station that searchs engine to just climb you likely so, and to Google collect very helpful also, yantai Seo station is collected one day by Google profit from I wrote a soft article in stationmaster net, the newer frequency of stationmaster net is very tall, the flexible language that I release is similar two hours in can searching engine, found, at the same time this also is outside catenary, google search index props up the catenary outside liking very much, if you can be in short-term inside produce a high quality outside catenary, submit the word below again next, general Google can collect your station very quickly.

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。

We have limited budget let me know if you can do this competitively.

我们有限的预算让我知道如果你能做到这一点竞争力。

We don't know how other critters breathe--lizards, for example.

我们还不知道诸如蜥蜴之类的动物如何呼吸。