選頻放大器 的英文怎麼說

中文拼音 [xuǎnbīnfàngdàqì]
選頻放大器 英文
accentuator
  • 選 : Ⅰ動詞1. （挑選） select; choose; pick 2. （選舉） elect Ⅱ名詞（挑選出來編在一起的作品） selections; anthology
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 放 : releaseset freelet go
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 放大器 : amplifier; pantograph; lawnmower; enlarger; magnifier
  • 放大 : amplify; magnify; boost; enlarge; blow up; gain; amplification; enhancement; multiplication; magn...
  1. Supervisor point is behind the postposition of power amplifier, optic signals coming from a tap of 99 : 1 enter into optic spectrum scan module, then the power levels which have been calculated by iterative algorithmic are sent to power control module to guide a set of tunable electronic attenuators

    此方案將監測點放在後置功率放大器的後面，從分束器中分出99 ： 1的光進入光頻譜掃描模塊，傳給功率控制模塊的光功率值經過選代演算法后計算出均衡后的功率值送到功率控制模塊的控制中心去調節電可調節衰減器。
  2. It designed signal amplifying circuit, frequency tricking circuit, data sampling and keeping circuit. the choice of 12 bits high accuracy a / d integrated data sampling card made program simply, high flexible and expandable. and to each error which is likely to occur in high voltage capacity type equipment during the monitoring, analysis and judgement are given

    在硬體電路實現上，注意選擇信號傳感器；合理設計了信號放大電路和濾波電路；設計了頻率跟蹤電路，數據采樣/保持電路；結合軟體控制選用了12位高精度的a / d轉換器，使軟體編程簡化且具有較高的靈和性和可擴展性。
  3. Cr selective amplifier

    阻容式選頻放大器
  4. Through analysising the characteristics of the power system with floating neutral point deeply, the paper puts forward a new plan of single - phase to ground fault line selection on the base of s ' s signal injecton method and gives the hardware and software design. in this design, the high speed sampling and data processing is carried out through using dsp processor ; the large electrice current is drived through the application of a high - performance audio power amplifier and transformer ; the communication between host computer and detectors is realized through rs485 bus technology ; the difference multilevel frequency - selected amplifier is designed and the feeble signal of space is sampled on the base of the theory of magnetic induction ; the interface between dsp and exterior chip and rs485 interface logical is designed through using fpga ; the using of lcd module and keyboard interfacing chip makes the interface between human and machine ; the programme of host computer and detectors is designed through using blocking design method

    在本設計中，採用高速的dsp處理器，實現了對故障特徵信息的高速採集與處理;採用大功率的功放晶元與變壓器配合的方法，實現了大電流信號的驅動輸出;採用485總線技術，組建了裝置主機與多探測器之間的主從式通訊網路，實現了多干擾條件下裝置主機與多探測器的可靠通訊;設計了差分式多級選頻放大電路，採用磁感應的方法實現了對空間微弱信號的接收;利用fpga技術，實現了控制器與多外設的介面及數字信號的串並轉換;採用了先進的lcd液晶顯示模塊及鍵盤介面晶元，設計了人機信息交互的介面;採用了模塊化的軟體設計方法，開發了裝置主機及探測器的軟體程序。
  5. The paper first reviews the research background and actuality of the filter " s design in china and other country, introduces the meaning of the project and the work of the paper, narrates the theory of the switched - capacitor network and the basic switch building blocks, analyses the related factors of the design of sc filter. such as the selection of the architecture, the trade off of the opamp " s gain, bandwidth, phase margin, slew rate and setting time, the effect of the switch " s on resistor, how to reduce the charge injection and the clock feed - through, the power consumption and the selection of the sampling frequency and so on

    本文首先回顧了濾波器設計的國內外研究背景和現狀，介紹了本課題提出的意義以及本文的主要工作，論述了開關電容網路原理和基本開關模塊，分析了開關電容濾波器設計的相關因素：電路結構的選擇，對運算放大器設計中高增益、寬帶寬、相位裕度、轉換斜率和建立時間等的折中考慮，開關的打開電阻對電路的影響，開關電容電路中怎樣減少電荷注入和時鐘饋通，以及整個電路的功耗問題和采樣頻率的選擇等。
  6. There is difference frequency measurement requirement for every part of pid regulating, difference between dynamic quality and static quality in response time and accuracy. according to these, it use the interrupt functions and high - speed counter of the simens s7 - 200 plc cpu226 basic unit and some peripheral circuit to measure frequency ; in software designed, the procedure frame of hydraulic - turbine governor and disperse process of parallel pid are analyzed, an improved pid algorithm is adopted to realize a pid regulation mode with variable structure and parameters ; the mechanical liquid - pressure system of the hydraulic - turbine governor is with electric - hydraulic converter unit of step motor. according to the drive character of five phase of response step motor, a variable frequency regulated voltage driver unit is designed in order to realize interface between plc and driver of step motor

    本文利用s7 - 200plc自身的特點設計了頻率測量單元，根據pid調節各個環節的特點，以及調速器動態特性、靜態特性對頻率測量的實時性和精度要求的不同，利用s7 - 200plc基本單元中內置的高速計數器以及相應的外圍放大整形、分頻電路，實現了水輪發電機組頻率的測量；在軟體上，對微機調速器的整個程序框架、並聯pid的離散化過程進行了分析，選用改進的pid演算法實現了變參數、變結構的pid調節模式；調速器的機械液壓隨動系統具有步進電機電液轉換元件，採用五相反應式步進電機，根據其驅動特性設計了變頻調壓驅動器，實現plc與步進電機驅動器之間數字介面。
  7. The paper utilizes a host computer and video branch to solve the conflicting problem of two pictures collected from two positions

    利用視頻選通器和視頻放大器實現了視頻圖像的遠程傳輸，並解決了利用一臺主機完成雙測點圖像採集過程中的時序沖突問題。
  8. Optical fibre amplifiers - basic specification - multichannel parameters - pulse method using a gated optical spectrum analyzer

    光學纖維放大器.基礎規范.多道參數.選通光頻譜分析儀脈沖法
  9. Optical amplifiers - test methods - part 10 - 2 : multichannel parameters ; pulse method using a gated optical spectrum analyzer

    光學放大器.試驗方法.第10 - 2部分:多道參數.選通光頻譜分析儀脈沖法
  10. Optical amplifiers - test methods - part 10 - 2 : multichannel parameters - pulse method using a gated optical spectrum analyzer

    光學放大器.試驗方法.第10 - 2部分:多通道參數.使用選通光頻譜分析儀的脈沖法
  11. Optical amplifiers - test methods - part 10 - 2 : multichannel parameters - pulse method using a gated optical spectrum analyzer iec 61290 - 10 - 2 : 2003 ; german version en 61290 - 10 - 2 : 2003

    光學放大器.試驗方法.第10 - 2部分:多道參數.選通光頻
  12. The lower resistance should select properly, too big to make radio frequency signal drive collector current too little, too small to make amplifier instable easily

    下偏電阻要選取適中，過大會使射頻信號推動集電極電流的能力過小，過小容易使放大器不穩定。
  13. The body of display screen regard computer as the control centre, allocating advanced and perfect program making and playing software, corresponding piecemeal in electronic screen and a certain area of the window of display of computer, show the real - time synchronism of content, and can be convenient to choose and show the size of the picture at will

    顯示屏體以電腦為控制中心，配備先進完善的節目製作及播放軟體，電子屏幕與電腦顯示器vga窗口某一區域逐點對應，顯示內容實時同步，並可方便隨意地選擇顯示畫面的大小。戶外雙基色視頻可以接收顯示錄像機影碟機電視機等視頻信號。
  14. The input voltage of the piezoresistive transducer, gain, sampling frequency and negative delay can respectively be graded through programming. the stored system is specially designed to have two modes of trigger ( namely, external trigger through wire breakage and inner trigger through overpressure signal ), reading software and interface circuit that are of

    該測試系統可通過編程選擇傳感器供電電壓（兩檔） 、放大倍數（四種） 、采樣頻率（四種） 、負延遲（四種） ；同時具有斷線外觸發和超壓信號內觸發兩種觸發方式；讀數的軟體和介面電路都具有串併兼容特性；系統還具有狀態自檢和定時上電等功能。
  15. The definition of stability and repeatability of the laser frequency and factors affecting the stability of laser frequency were analysed. the normal methods used to stabilise frequency and produce double - frequency were explained. after analysing the working conditions and related parameters of the laser device, it was concluded that the laser tube should be put inside an insulating cover and an electric discharge tube with a bigger diameter and length, smaller wall thickness and a higher thermal conductivity coefficient should be chosen

    分析了激光頻率的穩定性、復現性的定義及影響激光頻率穩定的因素；介紹了常見的穩頻及產生雙頻的方法；分析論證了激光器雙縱模熱穩頻的使用條件和有關參數的關系，得到結論是：應將激光管裝在保溫罩內；選用放電管直徑及長度大、壁厚小、材料導熱系數大的放電管。
  16. When using the optional pcsa - dsm1 data solution module, which is neatly integrated into the rear of the unit, the sony pcs - tl30 is capable of sending or receiving any image that can be displayed on a pc presentation data in native xga resolution during a video conference. and because the pcsa - dsm1 is equipped with an rgb out connector, presentation data from the pcs - tl30 can be enlarged by connecting the unit to equipment such as a projector or a large display

    使用選購的pcsa - dsm1資料分享器模組時，該模組整地集成在設備的後部， pcs - tl30能夠在視頻會議中，以xga解析度，發送或接收pc機上所能夠顯示的任何圖像會議報告數據.而由於pcsa - dsm1配備rgb輸出介面，因為可以將系統與投影機或大屏幕顯示屏等設置連接起來，放大pcs - tl30輸出的會場報告數據
  17. This paper utilizes masking rate theory to analyze the variation of center zero - level energy, the influence of metallic mesh ’ s different parameters on infrared transmitting ; deduces the relational expression between infrared transmitting efficiency and metallic mesh ’ s parameters ; comes to the conclusion that we can improve infrared transmitting efficiency by increasing

    理論研究表明，金屬網柵的周期選擇在200 ~ 400 m之間，線寬不大於10 m ，是較為理想的網柵參數。最後，在實驗室里用1 ~ 20ghz的信號發生器、功率放大器和頻譜分析儀等雷達波檢測設備，對金屬網柵的屏蔽效率進行測試。
  18. Firstly, the theory and the architecture of hardware system are described, secondly, the steps of the signal processing are discussed in detail. based on the experiments and the characteristics of the signal, we pre - process the signals with band - pass filter, proportional amplifier and coherent demodulator. after sampling and analysis doppler information, we display the final results distinctly to alarm in time

    然後，結合系統中各主要部分的任務，詳細介紹了信號處理的各個步驟：通過實驗比較，並結合接收信號的特點，選用帶通濾波器、比例放大器、相干檢波等技術對信號進行預處理；然後對獲得的多卜勒信息進行采樣和頻譜分析；最後，用比較直觀的形式顯示數據結果，以及時準確地告警。
  19. Background is high resolution moving picture. the working principle is like midi karaoke player. but the defect of midi is obvious, midi music is pure musical instruments play combination, expression ability be got restriction. now, with the advance of technology, will use the form of mp3 lyric karaoke songs to replace the form of midi, the song files playing have realized original sing, to improve the amusement of karaoke. make mtv sing more to be fill with expression, another, the price is cheap, below with midi karaoke player product of same class. becase support cd vcd dvd jpeg mp3 mpeg4 disc form moreover, so apply extensively

    這款點歌機主要的特點是支持mp3走字字幕格式的mtv歌曲文件，背景是連續滾動播放的高畫質視頻，類似於midi點歌機的工作原理，但是midi的缺陷是現而易見的，它的音樂是純樂器音符的演奏組合，表現能力就受到了限制，隨著技術的進步，用mp3走字的方式來替代midi走字的方式演義卡拉ok歌曲，歌曲文件的播放就實現了原聲原唱的要求，大大提高了卡拉ok的娛樂性，使mtv演唱更富有表現力，另外，性價比也較突出，價格總體要低於同檔次的midi點歌機產品，由於同時兼容普通cd vcd dvd jpeg mp3 mpeg4碟片的播放，具有廣泛的適用性，所以是家用娛樂設備的不二選擇。
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