調幅系數 的英文怎麼說

中文拼音 [diàofúxìshǔ]
調幅系數 英文
amplitude-modulation factor
  • 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...
  • 幅 : Ⅰ名詞1. （布帛、呢絨等的寬度） width of cloth 2. （泛指寬度） width; size 3. （姓氏） a surname Ⅱ量詞（用於布帛、呢絨、圖畫等）
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 調幅 : [電子學] amplitude modulation （am）; amplitude調幅發射機 amplitude modulated transmitter; 調幅 ...
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. 1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %

    從功率單向流動角度出發，提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲，在調制系數0 . 1 m 0 . 5情況下，控制移相角按正弦規律變化，使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號，經過整流、濾波、低頻逆變，從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載，移相全橋具有超前橋臂零電壓開通，滯后橋臂或者零電壓開通（ _ 0 ）或者零電流關斷（ _ 0 ）的軟開關特性，而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。
  2. The main work is done with the help of model experiment. in the flood - relief experiment, the flood carrying capacity of spillway tunnel is checked. in the hydraulic experiment of the diversion power conduit system, the followings are studied : the flow condition and fluctuation in the surge chamber, the distribution of flow velocity before the rack in the surge shaft, the amplitude of stage in the quick gate bay etc. the test step, content and results of different proposals are introduced in details

    本項優化試驗研究的目的主要在於，通過泄洪系統整體水力學試驗，校核泄洪洞的泄流能力；通過發電引水系統整體水力學試驗，研究調壓井內水流流態和水位波動情況、調壓井內攔污柵前流速分佈情況；確定快速閘門井內水位波動幅度；試驗確定壓力管道水擊壓力穿井系數以及泄洪洞弧形門處的水壓力。
  3. Based on regional geochemical surveying results of shalanzhan sheet, the authors deal with in this paper the application of regional geochemical data to basic geological survey in the light of element associations, surface enrichment coefficients of elements, element content ranges and petrogeochemical data

    根據沙蘭站幅區域化探掃面成果，從元素組、元素的表生富集系數、元素的含量區間、巖石地球化學資料等方面，對區域化探資料在基礎地質調查中的應用進行了探討。
  4. Principle and repair of rf pa module for dx - series digital am transmitter

    系列數字調幅發射機射頻功放模塊的原理及維修
  5. The algorithm have the good one - way property, high sensitivity to initial values and good security due to the intrinsic characteristic of chaotic system and rijndael algorithm. the simulation experiment demonstrates the convenience and good hash performance ; 3 ) a new scheme of digital voice secure communication was proposed based on chaotic modulation without additional synchronization. the modulation sequence generated by chaotic logical mapping was used to encrypt the digital voice signal

    混沌系統和rijndael演算法的固有特點使該演算法具有較好的安全性、對初值有高度的敏感性以及較好的單向性能，並且易於實現，是一種有效的單向hash函數； 3 ）研究了一種無需同步的基於混沌調制的數字語音保密通信系統的方案，利用邏輯映射產生混沌調制序列，以該序列作為密碼對數字語音進行加密處理，為了更好的隱匿信號特徵，混沌調制在小波分解的基礎上，對不同的通道使用不同的參數進行，並借鑒混沌掩蓋對信息信號進行了限幅處理，使密文完全隨機化。
  6. In this paper, the index of unevenness, concentration, and variation have been defined and calculated according to gauge records of runoff in the 1956 - 2000

    根據長江源區1956 - 2000年河流月徑流資料，分析了年內分配不均勻系數、完全調節系數、集中度、集中期、變化幅度等特性。
  7. We give ptr ' s amplitude and phase signal of one dimension based on the theory of ptr, discuss the ptr ' s signal ' s frequency characteristic, and a method for measuring thermal diffusivity of opaque materials is introduced. then, we study on anisotropic materials " thermal conductivity, the temperature field and thermal conductivity tensor of anisotropic materials is theoretically deduced from the theory of ptr, and is proved by the experiment

    從光熱輻射理論出發，推導出一維情況下ptr信號的振幅和位相表達式，討論了光熱信號的頻率特性，介紹了一種用ptr技術測量不透明材料熱擴散系數的優化方法；接著研究分析了各向異性介質受調制激光束輻照下產生的光熱信號，在理論上推導出各向異性介質的溫度場以及熱導率張量並給予一定的實驗驗證。
  8. Broadcasting and telecommunication. data broadcasting system compatible with a. m. sound broadcasting

    無線電廣播和通信.無線電調幅廣播的協調數據擴散系統
  9. Moment modified factor

    彎矩調幅系數
  10. ( 3 ) total coefficient of modulation of moment for the frame applied horizontal load and vertical load is bigger than that of the same frame applied vertical load

    （ 3 ）框架既承受水平荷載又承受豎向荷載時的總彎矩調幅系數比相同結構只承受豎向荷載的總彎矩調幅系數大。
  11. Then limiting load is decreased. ( 6 ) horizontal load can increase the coefficients of the modulation of moment when value of is little while decrease it when is large

    （ 6 ）在中支座截面相對受壓區高度較小時，有水平荷載的框架其彎矩調幅系數要大於只有豎向荷載的框架。
  12. The testing results indicate that the hrb400 continuous reinforced beam not only can achieve plastic internal force redistribution thoroughly and also has enough capability in the amplitude adjustment and can achieve the quotient designed

    試驗研究結果表明， hrb400級鋼筋混凝土兩跨連續梁能夠達到完全的彎矩重分佈，並且具有足夠的調幅能力，能達到設計的調幅系數。
  13. So, for the design of prestressed frame, the later coefficient may be considered as the parameter of modulation of moment and the moment modulated is the moment caused by the vertical load plus the one by the horizontal load

    因此，在預應力框架設計中，可以取只承受豎向荷載的彎矩調幅作為其調幅標準，調幅彎矩為豎向荷載產生的彎矩與水平荷載產生的彎矩之和，即用最小的彎矩調幅系數來調整截面的彎矩。
  14. At last, with the program, 18 one - storey and one - span prestressed frames are simulated. some conclusions are reached with the taking into account the, secondary moment and types of load applying : ( 1 ) the in the beam affects the ductility of the section and rotary property of the plastic hinge. so total coefficient of the modulation of moment becomes less with the becoming bigger

    最後，本文利用編制的非線性程序，模擬了18榀單層單跨預應力框架，重點研究截面相對受壓區高度、次彎矩、加載方式對塑性內力重分佈和彎矩調幅的影響，從中得出了以下主要的結論和規律： （ 1 ）框架梁相對受壓區高度在很大程度上反映了截面的延性，體現了塑性鉸的轉動能力，框架的總彎矩調幅系數隨著相對受壓區高度的增大而減小。
  15. ( 2 ) if secondary moment is taken for one kind of modulation of moment and there are the same, the effect of secondary moment on the modulation of moment becomes bigger with secondary moment becoming bigger. if prestressed frame can not complete full redistribution of internal force, ultimate load may put off and put up because of secondary moment. total coefficient of modulation of moment also is bigger

    （ 2 ）如果把次彎矩看著是對框架的一種彎矩調幅，在相同的相對受壓區高度下，次彎矩越大，次彎矩調幅作用越強；如果結構不能實現完全的內力重分佈，則次彎矩能夠延緩截面極限承載力的到來，提高結構的極限承載力，結構總的彎矩調幅系數也隨著次彎矩的增大而增大。
  16. At the same tune, the paper analyses and discusses the control projects of the above parts. as for the hardware of the control system, on principle of reliability and considering the badly working condition of the vibratory roller, the paper chooses the special controller sp ecializing in the realm of construction machinery ' s control system in order to insure the reliability of the control system and simplify it. about the control quality of the system, the paper establishes the mathematical modes of the frequency modulation system and the amplitude modulation system, analyses the irrationality of the amplitude modulation project, puts forward to apply proportional - integral - differential controller ( pid controller ) to the traveling system and frequency modulation system

    作為控制系統的方案設計的基礎，本文首先對影響壓實效果的振動參數進行了分析；然後針對智能振動壓路機的功能要求，將控制系統分為壓實參數的自動和手動控制、行走控制、轉向和蟹行控制以及智能灑水控制等幾個部分，對各部分的控制方案進行了分析對比和論證；在控制系統硬體設計方面，以可靠性為原則，考慮到振動壓路機的惡劣工況，選擇了專用於工程機械控制領域的專用控制器，使系統的硬體設計得以可靠性保障和簡化；針對控制系統控製品質問題，建立了調頻和調幅系統的控制模型，對調幅系統的控制不合理性進行了分析，提出採用pid控制器對行走和調頻系統進行校正；在軟體設計方面，對各個控制部分進行了軟體編程流程圖設計。
  17. The reasons of the signal distortion are analyzed, and the relations of receiving bandwidth with distortion degree is discussed, for the more a steady point in the amplitude modulation signal is given by the method of the statistics. looking at the point as the timing reference point of the receiver, the stability of the receiver is less than 100us

    分析了接收信號失真和受干擾的原因所在，論述了接收帶寬和失真程度的關系，並在此基礎上，利用統計的方法在調幅信號的下降沿上找到了一個較為穩定的特徵點，將其作為接收機的定時參考點，定時不確定度可以達到數十微秒量級。
  18. The purpose of this paper is to resolve some key technologies of the amplitude - modulation inductive displacement transducer signal processing circuit with nanometer resolution, such as the design of high stability signal generating circuit ; the technology of high precision digital phase - sensitive detection circuit ; the technology of digital filter and linearization, etc

    本文主要研究調幅式電感位移傳感器精密測量系統中涉及的高精度載波信號發生技術、高精度數字相敏檢波技術、數字濾波及線性擬和等關鍵技術，目的是進一步改善調幅式電感位移傳感器精密測量系統的測量精度，適應納米級測量的要求。
  19. 4 ) as designing, modulation of the secondary moment must be considered. but when the secondary moment is very great, the whole secondary moment as modulation is unfit. there maybe have a fit reducing coefficient

    （ 4 ）設計調幅時，需考慮次彎矩調幅，但當次彎矩很大時，把次彎矩完全作為調幅是不適當的，應當有一相應的折減系數。
  20. For the multipath delay spreading problem existing in the mobile communication systems, a parallel quadrature am data transmission system with a number of overlapping subchannels is investigated

    摘要針對移動通信系統中存在的多徑延時擴展問題，研究了一種具有很多相互重疊子通道的并行正交調幅數據傳輸系統。
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