wave frequency 中文意思是什麼

wave frequency 解釋
波的頻率
  • wave : n 〈美海軍〉女志願軍人〈見 WAVES 條〉。n 1 波浪；碎浪； 〈the wave（s）〉 〈詩〉海。2 波動；波狀...
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  1. In current practice, array parameters are usually calculated according to the strength and types of interference wave, frequency characteristics, and azimuth, whereas the effect of array center is often ignored, and simply view the graphic center as array center

    指出現在施工設計中，組合參數的確定主要圍繞干擾波、頻率特性和方位角等方面進行論證，忽視了其組合中心的確定。
  2. In every signal you produce, from the sine wave frequency accuracy to the fast rise fall times of square waves, to

    其好處是您能修飾所產生的每一個信號，從正弦波的頻率精度方波
  3. There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not

    首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。
  4. The pulse frequency and the ladder wave frequency are two factors that affect the range of velocity adjusting. the range of velocity adjusting is finally decided by the lesser

    從步進頻率和階梯波頻率兩個方面對細分驅動系統的調速域值進行了分析，得出調速域值受兩方面綜合影響，而且最終結果取兩者中域值范圍較小者。
  5. The relation between collisional absorption of the em - wave and the plasma density, plasma collision frequency, and incident wave frequency is obtained

    給出了不均勻非磁化等離子體密度、等離子體碰撞頻率、電磁波頻率與碰撞吸收的關系。
  6. This paper introduces the structure and basic principles of ultrashort wave frequency hopping station system, analyzes on the tod and three kinds of frequency - hopping synchronizations, and advances a scheme of deferred - network - entry synchronizationt

    介紹了超短波跳頻電臺系統結構及基本原理，分析了時間信息（ tod ）與3種跳頻同步分類，提出了一種遲入網同步方案。
  7. Design procedure of u - shaped anti - rolling tank system is established, and program of scale design for tank is summarized, and an innovation selecting the natural frequency of controlled passive anti - rolling tank is put forward according to variation range of wave frequency, the natural frequency of rolling of a ship and other influencing factors, and causes of formation of tank damping and motion state of water in tank are studied, calculation formula of the u - tube tank damping and design method of tank damping configuration are given, and the influence of tank vertical location within the ship on ship parameters, stabilization performance of tank and water motion in tank is studied

    建立了完整的u型減搖水艙系統設計程序；總結了u型減搖水艙尺度設計；提出了根據波浪頻率變化范圍、船舶固有頻率變化范圍和其它影響因素，選取可控被動式減搖水艙固有頻率的新方法；分析了u型減搖水艙阻尼的形成原因，給出了估算水艙阻尼和設計水艙阻尼結構的方法；研究了減搖水艙在船舶中的垂直位置布置對船舶參數、水艙減搖性能和艙內流體運動性能的影響。
  8. Measurement methods for reflectivity of electromagnetic wave absorbers in millimetre wave frequency

    毫米波頻率電磁波吸收裝置反射率的測量方法
  9. To get a high precision rotate speed, the system has realized the respective control of ipm ' s input dc voltage and output voltage wave frequency

    為了保證系統的轉速精度，將逆變器直流側電壓和交流輸出頻率分開調節。
  10. Along with millimeter wave technology development, the high speed modulate 155mb / s millimeter wave receiver requires that the local oscilloscope performance should be excellent to satisfy its communication requirement. this article aimed at the requirement of 8mm millimeter wave receiver and developed a high performance millimeter yto frequency synthesizer. the article introduces several millimeter wave frequency synthesizers and analyzes their characteristic

    隨著毫米波技術的發展，在毫米波段高調制速率的毫米波通信機對毫米波本振源提出了更高的性能要求，本文針對8mm高速寬帶155mb / s無線接入通信系統對毫米波本振源的要求，介紹了幾種毫米波頻綜的設計方案，並進行了分析，最後決定採用鎖相倍頻的方案。
  11. The components used in the system project are detailed analyzed. all the parts contributed to phase noise are discussed as emphases. this millimeter wave frequency synthesizer has better phase noise and wider band

    本文詳細分析了本系統方案及其特性，並對其中用到的鎖相環路各部件及其對系統相位噪聲性能的影響作了重點討論。
  12. Measurement method for dielectric properties of fine ceramics in millimeter wave frequency range - part 1 : cutoff waveguide method

    毫米波頻率范圍內精細陶瓷介電性能的測量方法.第1部分:截止波導法
  13. Measurement method for dielectric properties of fine ceramics in millimeter wave frequency range - part 2 : open resonator method

    毫米波頻率范圍內精細陶瓷介電性能的測量方法.第2部分:開啟式諧振腔法
  14. Measurement method for dielectric properties of fine ceramics in millimeter wave frequency range - part 3 : dielectric resonator method excited by nrd - guide

    毫米波頻率范圍內精細陶瓷介電性能的測量方法.第3部分: nrd導向激發的介電諧振器法
  15. Waveguide type dielectric resonators - general information and test conditions - measurement method of complex relative permittivity for dielectric resonator materials at millimetre - wave frequency

    波導型介質諧振器.通用信息和試驗條件.測量
  16. Our work have proven the possibility of avalanche high order multiply technology in millimeter wave band, and present valuable research for the novel millimeter wave frequency source technology

    實驗驗證了利用雪崩器件在毫米波頻段實現高次倍頻切實可行，對這種新型毫米波頻率源技術進行了有益的研究和探索。
  17. This paper presents an integrated comparison of object - detecting techniques, the techniques that base on millimetre wave frequency modulated pulse - doppler radar is chosen on the basis of the idiographic demand of the recws

    通過對車載目標探測技術的綜合比較，結合本報警系統的具體要求，選用了車載毫米波調頻多普勒雷達目標探測技術。
  18. Waveguide type dielectric resonators - part 1 - 4 : general information and test conditions - measurement method of complex relative permittivity for dielectric resonator materials at millimetre - wave frequency iec 61338 - 1 - 4 : 2005 ; german version en 61338 - 1 - 4 : 2006

    波導型介電諧振器.第1 - 4部分:一般信息和試驗條件.毫米
  19. Waveguide type dielectric resonators - part 1 - 4 : general information and test conditions - measurement method of complex relative permittivity for dielectric resonator materials at millimeter - wave frequency

    波導型電介質諧振器.第1 - 4部分:一般信息和試驗條件.在毫米波頻率下電介質諧振器材料用復合式相關電容率的測量方法
  20. The wave frequency has close relationship with the train ’ s speed. the train ’ s speed is more rapid, the frequency of wave is also higher, and the wavelength is shorter. if the distance between two wheels on the same rail is equal to

    如果兩個車輪之間的距離等於半波長的奇數倍，那麼當這兩個車輪所產生的振動波傳播到鋼軌上同一點的時候，所引起的振動在該點的相位正好相反，振動疊加后的和位移將為零。
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