Intermediate frequency instability has had the most uneven history.

中频不稳定性的研究经历了极为曲折的道路。

Low and intermediate frequency instability models are taken up first.

首先处理低频和中频不稳定性的模型。

The intermediate frequency circuit includes QPSK modulation based on HFA3724, PLL circuit based on MB1502.

中频部分主要由HFA3724正交调制解调器和基于MB1502的锁相频率合成电路等组成。

The pure quartz lump becomes quartz tube via untouched technology of intermediate frequency induction heating.

采用中频感应加热无接触技术，将石英净坨拉制成为石英管。

The experiment of the first intermediate frequency FM FDM video signal from Asia satellite l was demonstrated.

系统进行了以传输亚洲一号卫星信号地面接收站第一中频多路电视信号为目标的现场实验。

Computerized Intermediate Frequency therapy Apparatus is one of the most useful electrotherapy units in clinical.

电脑中频治疗仪是一种在临床被广泛应用的电子康复治疗设备。

A feasible digital intermediate frequency receiver based on software radio technology is presented in this paper.

基于软件无线电思想介绍了一种可行的中频数字化接收机系统设计方案。

Methods 107 cases with scapulohumeral periarthritis were treated by modulation random intermediate frequency current.

方法采用调制随机中频电流机治疗肩周炎患者107例。

While the Digital Intermediate Frequency technology is one of the pivotal technology in the wireless base station system.

而数字中频技术是无线基站传输系统中的关键技术之一。

The most important secret messages are hidden in intermediate frequency, which can resist normal JPEG compressing attack.

最重要秘密信息隐藏在中频，能够抵抗正常的JPEG压缩攻击。

And the application in intermediate frequency digital receiver proves this software system's efficiency and dependability.

在中频数字接收系统中的应用验证了此软件系统的效率和可靠性。

This paper introduces an AFC algorithm for a zero-intermediate frequency direct-sequence spread spectrum digital receiver.

为了使得射频源和波导管的频率保持一致 ，采用了自动频率控制系统 （AFC）。

Embedded the watermark information into intermediate frequency in the DCT-based watermark algorithm by seek the feature field.

在基于DCT的数字水印算法中通过寻找特征区域将水印嵌入在能量最大的离散余弦系数中；

Low or intermediate frequency combustion instability generally involves the interaction of several components of an engine system.

低频或中频燃烧不稳定性通常包含发动机系统中几个组件的相互作用。

GPS digitized intermediate frequency signal sampler was used to validate the algorithm of acquisition and tracking of software receiver.

采用GPS中频信号采样器采集实际GPS数据，对搜索和跟踪算法进行了验证。

The example by quenching to intermediate frequency is analysed, advantage having ascertained mill roller intermediate frequency quenching.

通过对中频淬火的实例分析，确定了轧钢机轧辊中频淬火的优势。

We extract watermarks in the intermediate frequency and low frequency region and compare them, using the extracted watermark which is better.

水印检测时，分别在中频和低频区域提取水印并进行比较，采用效果较好的水印作为检测水印。

The system adopts superheterodyne architecture. It consists of intermediate frequency (IF) band and radio frequency (RF) band hardware design.

该收发信机采用超外差结构，主要包括中频部分的硬件设计以及射频部分的硬件设计。

In an array consists of 27 combination vibrators, a strong coupling mode of axial and radial vibrations presents in the intermediate frequency range.

在由27个组合振子构成的阵列中。居间频率范围内出现一个轴向和径向的强烈耦合模。

The system design method proposed by the paper examines the frequency tracking accuracy of the frequency agile radar synthesis detection unit at intermediate frequency.

本文提出了通过系统设计的方法将频率捷变雷达综合测试仪频率跟踪精度的检定在中频进行。

This paper introduces the theory and design method of digital intermediate frequency receiver, and based on high speed DSP and FPGA establish hardware process platform.

介绍了一种数字中频接收机的原理与设计方法，并以高性能DSP、高速fpga为基础，搭建硬件处理平台。

Introduce the work principle of the cold roller about two frequency quenching device and intermediate frequency system, the method of debugging and valuable experience.

介绍了冷轧辊双频淬火装置中频系统的工作原理、调试方法和宝贵经验。

Finally the fruit of research for my master degree presents in the way of actual de-hopping and digital intermediate frequency receivers that have passed the examination.

最终以通过检测的跳频解跳与数字中频接收机的实物作为硕士期间的研究成果呈现。

In high power laser system, a small size phase-distortion wavefront measure is necessary to compensate and control the wavefront of laser beam with intermediate frequency.

在高功率激光系统，激光束小尺度相位畸变波前探测是实现激光束中频段波前补偿与控制的重要前提。

Objective To explore the clinical effect of ultrashort wave plus gal vanoionivation I-or ultrashort wave plus intermediate frequency electrotherapy on chronic laryngitis .

目的：探讨超短波并直流电碘离子（I-）导入或超短波并中频电治疗慢性喉炎临床疗效。

In order to decrease the mirror frequency interference, cross interference and inter-modulation interference, double IF (Intermediate frequency) is adopted in the receiver.

为了降低镜频干扰、交调和互调干扰，接收机采用了双中频方案。

It was suggested that direct intermediate frequency sampling was approached by two branch sampling, otherwise digital product detector was adopted to digital interpolation.

提出用二分项采样法实现直接中频采样，而数字式检波器采用数字内插法。

The paper introduces some experience in anti-interference for design and parallel operation of small intermediate frequency three-phase synchronous generator with active load.

本文介绍了带有源负载时，小型三相同步中频发电机的设计和并联运行时抗干扰方面的一些经验。

Based on the theory analysis of this scheme and an engineering example, formula of frequency planning and design rules of intermediate frequency filter's parameter are proposed.

对该新方案进行了理论分析，进而对这种改进二次变频方案提出了采用的频率配置关系和中频滤波器参数设计准则，并结合一个工程实例完成了相关设计。