frequency system中文是什么意思

• 频率系统

• frequency    n. 1.屡次，频仍，频繁。 2.(脉搏等的)次数，出现 ...
• system    n. 1.体系，系统；分类法；组织；设备，装置。 2.方 ...
• system frequency    系统频率
• analog frequency modulation system    模拟调频制
• armstrong frequency-modulation system    阿姆斯特朗调频系统
• automatic frequency control system    频率自动控制系统
• baseband frequency repeating system    基带中断系统; 基频接转制; 基频中继系统
• beam-control frequency system    束流控制调频装置
• beat-frequency system    拍频系统
• carrier frequency system    载频系统
• common frequency system    共频系统
• direct frequency modulation system    直接调频制
• doppler system with double frequency    双频多普勒系统
• doppler system with single frequency    单频多普勒系统
• double frequency system    双频制
• dual-frequency em system    双频电磁系统
• fms frequency management system    频率管理系统
• four-frequency diplex system    四频率同向双工制
• frequency and amplitude system    频率分发系统
• frequency division multiplex system    分频多路传输方式
• frequency division switching system    频分制交换机系统; 频分制转换系统; 频率分割制交换机
• frequency division system    分频制; 频分制; 频率分割制; 频率分隔制
• frequency doubling system    倍频系统
• frequency interleaving system    频率交错制
• frequency modulated television system    调频电视系统

• For the characteristic of low frequency movement of the target and high frequency system line - of - sight jitter , basic theory of compound axes line - of - sight stabilization system with line - of - sight pointing reference unit ( lospru ) is analyzed
  依据目标低频运动和仪器视轴高频抖动的特点,分析了使用视轴瞄准参考器的复合轴视轴稳定系统的基本原理。
• The system ’ s mainliner is used optical fiber , based modbus protocol and connected many subsystems , video frequency system and direct telephone , as a whole of digital net , sound net and image net
  系统基于modbus网络协议,主干环型光纤以太网络,通过智能接口和现场各监测分站,网络视频系统和直通电话系统连接,实现数据网、语音网和视频图像网三网合一。
• After that , it discusses the principle of the band - pass technology , illuminating the feasibility of the digital intermediate frequency system based on the sampling speed which is two times lager than the signal band but unsatisfying the nyquist theorem
  随后讨论了带通采样技术的原理,说明可以使用不满足奈奎斯特低通采样定理但大于信号带宽两倍的采样速率进行中频数字化,减轻基带处理负担。
• Secondly , we carry out some monitor and incident search means . lan design must satify work condition and stability ; video frequency system design roots in the third control system of video frequency , which adopts dlp combination technique
  其次,提出了煤矿大型设备的监测及事故排查方法。局域网络硬件设计上满足工作环境和性能稳定性;视频系统设计基于第三代视频监控系统,利用背投和dlp拼接墙技术实现大屏显示。
• In the design study of variable voltage and variable frequency systems , the thesis focused on the exploration of the main sources of the electromagnetic interference , the main path of the electromagnetic interference and the sensing unit in the vvvf system
  在变频调速系统电磁兼容设计研究中，本文分析了变频调速系统的主要干扰源，主要干扰途径以及敏感源。并针对各干扰源提出了相应的兼容设计方法如接地，屏蔽和隔断。
• Based on the series of problems of the practical beam unit dragging system , an excellent energy conservation method is proposed in this paper , i . e . the slip frequency is kept constant in variable frequency system . and a digital spwm generator is adopted to put this control method into practice
  针对实际游梁式抽油机拖动系统存在的一系列问题，提出了一种优良的节能方案? ?转差频率恒定的变频调速系统，并用一种数字式spwm发生器来实现该控制方案。
• Firstly , this paper introduces the basic theory and the key technology of digital intermediate frequency system , secondly the method of the sampling rate conversion , multirate signal , and which is the important , essential theory in digital intermediate frequency system , is studied carefully . then it analyses the components of the flow chat . finally we simulated the designed system on spw and the properties of the system is make out
  文章首先阐述了数字中频系统的基本思想、关键技术和发展概况,然后研究了数字中频系统涉及的数字信号处理理论,主要内容包括欠采样技术、多速率信号处理、正交变换理论与高效数字滤波技术,然后详细分析了数字中频系统的设计,并在spw仿真平台上加以实现,最后根据仿真结果分析了数字中频系统的性能。
• This thesis will introduce a new terahertz source which based on vacuum electronics , transmission characteristics of the high frequency system and the process of interaction between electron beam and the high frequency traveling - wave have been researched , which offers basic technology for further deep development of terahertz source technology basd on vacuum electronics in our country
  本文将介绍一种基于真空电子学的新型太赫兹辐射源器件,对其线路特性进行研究以及高频系统中注波互作用过程进行数值模拟计算,为国内真空电子学太赫兹源的研究奠定了一定的技术基础。
• Mathematical model of sensorless induction motor and corresponding control algorithm have also been setup . in the paper , a new variable voltage variable frequency system has been developed based on the study above , and digital signal processor , tms320lf2407 , which is specially designed for motor drive system in practice , is also used to debug the system
  本文对异步电机控制系统着重进行算法和控制软件方面的研究，在此基础上根据异步电机变频调速控制的特殊工况，开发出了一套高性能的异步电机变频调速的矢量控制算法和软件。
• High frequency system in high power resources of millimeter - wave radiation , such as resonator system , it ' s capability performs a vital role in whole high power microwave system . computer simulation is necessary in design process . basing on academic analyzing , simulation of resonator system with computer assistant tools will be very useful to optimize the apparatus designing
  高功率微波源中的高频系统，如谐振腔系统等，其设计性能对整个高功率微波系统起着至关重要的作用，设计过程中的计算机仿真亦是必不可少的。