查询词典 difference frequency

As metal is brought near the search coil… the frequency shifts a bit, producing an audible frequency shift that can be heard in the earphones.

由于金属带附近搜索线圈。。。的频移一点，产生声频移，可在耳机中听到的。

The measurement of seismometer transfer function is implemented mainly in the low-frequency part, and transfer function in the high-frequency part is obtained with analysis and calculation.

本文对宽频带地震计的频率特性测试是在地震计的低频段进行，对于地震计高频段的频率特性采用理论分析计算获得。

Simultaneous heating and quenching with high power medium frequency equipment for parts of long shaft,adopting special induction coil and adjustable induction coil and self tempering ,will improve on medium frequency quenching quality of the parts and raise obviously productivity,thereby cause the enterprise to obtain fine product quality,high productivity and Low production cost.

对长轴类零件采用大功率中频机同时加热表面淬火的方法，配以专用感应圈和伸缩感应圈的应用和自回火的应用，结果表明，可提高零件中频表面淬火质量，并大大提高生产效率，从而使企业在生产中取得高产品质量，高生产效率和低生产成本的极佳效果。

A charge pump phase locked loop based on self biased technique is presented. In this technique, the operating bias levels are essentially established by the operating frequency of the voltage controlled oscillator, namely, all bias voltages and currents are determined by VCO controlling voltage. Thus, a fixed damping factor and a fixed ratio of the bandwidth to operating frequency are obtained, which are defined by th...

给出了基于自偏置技术的电荷泵锁相环电路，压控振荡器的工作频率动态地建立了电路内部所有的偏置电压和电流，从而实现了固定衰减因子，固定环路带宽与工作频率之比，这二者由电容的比率决定，极大地实现了电路设计的工艺无关性，同时也得到了小的相位抖动，最后，对这种锁相环的稳定性进行了一定的分析。

Because cortical organization can be modified by behavioral training, we attempted to reduce tinnitus loudness by exposing chronic tinnitus patients to self-chosen, enjoyable music, which was modified to contain no energy in the frequency range surrounding the individual tinnitus frequency.

此前的研究表明，这样一种耳鸣响亮到足以导致占人口的1%到3%的人的生活质量显著下降。这种疾病的原因尚不清楚，但是耳鸣患者的听觉皮层——处理听觉信息的大脑区域——常常受到影响，其受影响程度与感受到的耳鸣程度有关。

The design of aircraft hydraulic system emphasizes particularly on choice of hydraulic component, calculation of fluid self-excitation resonance, avoidance of coupling of pump's ripple frequency and natural frequency of pipeline, and layout of pipeline system, but the design of aircraft structure emphasizes particularly on calculation of stress and intensity.

飞机液压系统的设计侧重于液压元件的选择、流体自激谐振的计算、避免液压泵脉动频率与管道固有频率的耦合及管路系统的布局，而飞机结构设计侧重于应力和强度的计算。

As a new signal processing method, Wavelet analysis decomposed different kinds of frequency element to non-overlapped frequency bands and this method put forwards an effective way to signal filter, signal-noise separating and character picking-up, especially it has well de-noising capability.

小波分析作为一种全新的信号处理方法，它将信号中各种不同的频率成分分解到互不重叠的频带上，为信号滤波、信噪分离和特征提取提供了有效途径，特别在信号去噪方面显示出独特的优势。

By using holographic theory,hologram sampling theorem and separation condition of frequency spectrum,the maximum spatial frequency of off-axis Fresnel was analyzed,and recording conditions were studied.

根据全息理论，通过分析全息图光栅结构的极值频率，利用抽样定理以及频谱分离条件，分析了离轴菲涅耳全息的记录条件，得到了不同于以往文献的最小记录距离及参考光源设置表达式，并做了计算机模拟验证。

By the research of the RLC series circuit, RLC Parallel circuit, and the starat of Fourier Series, get the further understanding and grasp the characteristics of the resonant of RLC circuit. Even more, on the basis of the RLC series resonance, the other circuit structures selected frequency wave frequency analysis of the election.

本实验通过对RLC串联电路、并联电路及方波的傅立叶级数展开的实验现象的测量及研究，进一步了解和掌握RLC谐振电路的特点，并在RLC串联谐振的基础上，搭建选频电路对方波进行选频分析。

Fundamental frequency is either equal to the switching frequency of the inverter(square-wave and PWM inverter)or ist simple fraction(1/3,1/5,and so) such as in Multiple PWM or sine PWM inverters.

基本频率是逆变器在相等的开关频率，或者方波是简单的分数(1 / 3，因此，1 / 5)，如在多个PWM脉宽调制逆变器或正弦量。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。