調變波 的英文怎麼說

中文拼音 [diàobiànbō]
調變波 英文
modulated wave
  • 調 : Ⅰ動詞1 （配合得均勻合適） harmonize; suit well; fit in perfectly 2 （使配合得均勻合適） mix; adju...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  1. A 3 - year follow - up study of 80 chinese patients with 9 years history of anorexia nervosa in hong kong, jointly conducted by the department of psychiatry at the chinese university of hong kong and tufts university school of medicine ( boston, usa ) revealed that less than half of them fully recovered from the eating disorder

    中大研究發現壓食病患者有長期后遺癥一項由香港中文大學醫學院精神科學系，與美國波士頓tufts醫學院合作的研究顯示，逾半厭食患者發病九年後仍未能完全康復，並會演變成暴食癥或出現其他進食失調。
  2. Research show that wavelet varied - grid feature vector is characterized by high - stable and high - distinguish. based on this vector the apery cognitron has solved the harmony of single - classifier and multi - classifier and the harmony of multi - feature. the data shows that the recognition rate and reliability has been effective improve

    實驗數據表明，小波變網格特徵向量具有穩定性高、區分性強的特點，基於此的智能字元識別機解決了單、多分類器協調和特徵協調問題，在應用快速二值化方法加強處理實時性的同時有效地提高了車牌字元的識別率和識別可靠性。
  3. This system of modifying the carrier waves is called "amplitude modulation, " or "am".

    這個改變載波的系統稱為「振幅調制」或縮寫為「AM」。
  4. The power of the modulated carrier wave is increased by the rf power amplifier

    射頻功率放大器增加了調變載波的功率。
  5. Furthermore, the range of measurement of it was pointed out. all the analysis shows that our crsi 1il can be used to measure the spatial mid and low frequency wavefront distortion. 5. based on our crsi and algorithm, the phase modulation characteristic of an lcslm was measured

    五、利用環路徑向剪切干涉儀共光路、雙光束干涉的特點，全場準確測量了液晶空間光調制器的位相調制特性，並且利用它的位相調制特性實現了臺階位相板畸變波前的補償，由此證明了液晶空間光調制器可用於控制波前畸變。
  6. A cyclic radial shearing interferometer was used to diagnose the wavefront distortion of a laser system and an lcslm ( liquid crysnd spatial ligh modulator ) was used to control it. some results have been summarized as follows : l. according to the theory of scalar quanity diffeaction and the model of the random gaussian phase screen of low frequency wavefront, the effect of the low frequency wavefront with different rms gradient on the focal spot of a laser beam was studied

    本論文在激光光束波前畸變檢測和控制上進行了新的探索，主要就空間相位調制環路徑向剪切干涉儀以及它對波前畸變的檢測和液晶空間光調制器及其對中頻段波前畸變的控制進行了研究，其研究的內容和取得的成果如下：一、根據標量衍射理論，結合低頻波前畸變的高斯隨機位相分佈模型，研究了不同均方根梯度低頻畸變波前對激光光束焦斑聚焦性的影響，並採用描述中頻段波前畸變的功率譜密度概念，模擬計算了它對激光焦斑旁瓣的貢獻。
  7. 7. based on our crsi and algorithm and double lcslm, an adaptive optical hardware system which c & n be used to model arbitrary complicated wavefront and the compensation of the wavefront can be accomplished was built. and according to the characteristic of a crs interferogram of a step wavefront produced by an lctv, the pixel - level calibration of this system is implemented

    七、採用已建立的空間相位調制環路徑向剪切干涉儀及其波前重建演算法，和位相調制持性已知的兩塊液晶空間光調制器，創建了一套用於模擬產生任意畸變波前並加以檢測和反饋控制的自適應光學硬體系統，並通過臺階波前對該系統實現了像素級校準。
  8. And the correction of a step wavefront produced by a step phase plate is accomplished successfully. 6. according to the phase modulation characteristic of an lcslm, arbitrary complicated wavefronts were modeled. the result shows that lcslm can be use to test the wavefront sensors and controller if lcslm has wider dynamic range and perfect optical quality

    六、通過利用液晶空間光調制器的位相調制特性，成功地模擬產生了任意畸變波前，指出若該器件有更大的位相調制動態范圍和均勻性，將有可能成為校驗波前傳感設備和波前畸變控制系統性能的有力工具。
  9. In this part the signal from the infrared sensor was amplified by common collector amplifier, and the demodulator was built by filter. in which the signal got demodulated. because we just need the frequency of the signal, filter may achieved

    通過信號通路，傳感器生成的調幅波信號轉變為與脈搏頻率相同的方波。先由運算放大器接共集電極電路完成信號放大，通過濾波得到脈搏信號的頻率，從而用濾波器電路完成了解調功能。
  10. In this paper, researching and producing on current waveform control system of inverter carbon dioxide welding machine is given. the overall plan, the design of hardware structure, the programming and debugging of software is described in detail. the bang - bang and alterable structure discrete pid synthetic control algorithm are used to modulate the width of pwm signal in real time, to acquire the fiat character by driving and controlling the opening and shutting time of igbt, the technology of " double impulse " is adopted to realize electric current waveform control

    本文介紹了逆變波形控制co _ 2焊機控制系統的研製，詳細闡述了總體方案的制定、硬體研製及軟體的編寫與調試，採用變結構、離散型pid + bang - bang復合控制演算法、實時調節輸出pwm信號的脈沖寬度，驅動控制用於逆變的大功率開關管igbt的開通與關斷時間，獲得逆變焊機平外特性。
  11. As we know, usually the wavelength tuning of the qpm - opo is achieved by changing the crystal temperature, but the response is not fast. in this paper we demonstrate the wavelength tuning of the qpm - opo by the electro - optic effect for the fast wavelength tuning

    我們知道，基於ppln的qpm - opo的波長調制通常可以通過改變晶體的工作溫度來獲得，但是這種靠溫度的調諧速度不快，本文給出了一種利用電光效應外加電壓快速調諧波長的方法。
  12. A modulated signal of tria ( tt / pw ) added by a normal noise. is demonstrated for 2 - d dependence of the waveform on time and trials and 2 - d dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random process including noise and signal

    以三角波電壓訊號加上準常態雜訊乘以無雜訊載波之調變訊號為例，圖示含有雜訊電壓訊號其波形隨時間及試驗之二維變動及頻譜隨頻率及試驗之二維變動，顯示雜訊與訊號之隨機過程在時域與頻域之不同特性。
  13. A modulated signal of eexp ( 2 * tt / pw ) added by a zero mean uniform noise. is demonstrated for 2 - d dependence of the waveform on time and trials and 2 - d dependence of spectrum on frequency and trials to show different time domain and frequency domain properties of a random process including noise and signal

    以雙邊遞減波電壓訊號加上均勻雜訊乘以無雜訊載波之調變訊號為例，圖示含有雜訊電壓訊號其波形隨時間及試驗之二維變動及頻譜隨頻率及試驗之二維變動，顯示雜訊與訊號之隨機過程在時域與頻域之不同特性。
  14. To show the designing and analyzing process of the control system, the article mainly discussed two parts. one is the power circuit part, which includes designing of the output fiher and the power transformer for the system, and also the way for igbt controlling and protecting. the other is control system for the inverter, which includes the way of producing spwm wave using microprocessor, the hard ware system of the inverter and the other assistant circuits

    文中重點從兩個方面分析了逆變電源控制裝置的工作原理和系統設計，包括逆變電源輸出濾波器的設計、逆變電源變壓器的設計、 igbt的控制保護等，用單片機通過軟體編程生成spwm調制波的方法、控制器硬體電路組成以及其它附屬電路的開發設計等。
  15. Optical waveguide travelling - wave modulators

    行波形調變器
  16. The above outcomes show that nxiits is most important in controlling the tone varieties and the numbers of the harmonic parts and the course of the vocal control maybe a process of alternative replacing

    Nxllts可能在控制其鳴聲的音調變化以及影響其嗚聲的諧波數量上起到一定的作用，其控制區發聲的過程很可能具有交替更換的特性。
  17. Pulse width modulation pwm

    脈波寬度調變
  18. The performance of the electric vehicle is improved greatly in which the harmonic wave of output voltage, power loss and torque pulsation of the system are decreased by controlling the switch angles

    它運用規則采樣法產生正弦脈寬調制波，通過開關角的控制抑制逆變器輸出電壓中的諧波分量，降低了電動機的損耗和轉矩脈動，使電動車的運行性能得到了較大改善。
  19. Optical grade lithium niobate single crystal is one of the most versatile and well - established active optical materials and is used in electro - optic, acoustic - optic, and nonlinear optic applications such as optical wave guide devices, modulators, optical integrated circuits and holographic memory

    由於其獨特的光電、聲光及非線性光學等性能，已被廣泛地應用在光波導元件、光調變器、積體光學迴路以及高解析度的全息存儲等重要元件。
  20. The present invention provides a wideband wavelength converter with four - wave - mixing, which includes a modulated laser diode, a modulator, a first and second polarized controller, a first, second and third tunable lasers, a optical coupler, a soa wavelength converter and a multiplexer

    本發明系提出一種寬頻四波混合波長轉換裝置，其包含調變雷射光源、光調變器、第一及第二極化控制器、第一、第二及第三可調式雷射、光耦合器、半導體光放大器、及一多工器。
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