射電指數 的英文怎麼說

中文拼音 [shèdiànzhǐshǔ]
射電指數 英文
radio index
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 指 : 指構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 指數 : 1. [經] （比數） index number; index 2. [數學] exponent
  1. The forth chapter is about the concept of digital maps, and introduce how to gride the digital maps for purpose of firepowers disposal. the fifth chapter import the models of transmission of electromagnetic waves. to clarify the communication ways between communication subsystem and firepowers

    第五章根據電磁波的傳輸特性及其數學模型，建立了戰區指揮車（通信中樞）與發射車（火力點）之間的通信模型，以及空域火力覆蓋的分層投影分析，這是本演算法核心。
  2. Then, we caculate the dynamic character of the reflective mtn cell with the optimized parameter, give out the distribution of velocity, twist angle and tilt angle at the midle of the mtn cell when switch on or off in consideration of the backflow

    並針對選定參數的mtn液晶盒作了動力學上的計算。文中分別了給出mtn盒在加電壓和撤電壓時，引流效應對反射率的影響，並比較指向矢，速度，中間層的傾斜角等參量分佈的情況。
  3. 1 、 through the theoretical analysis and the medici simulation, according to the design directive, the structural parameters are designed comprehensively, including the dopant concentration and the depth of the emitter, the base dopant concentration and the depth ( especially the ge ratio ), the dopant concentration and the depth of the collector

    主要工作是: 1 、通過理論分析和medici模擬，綜合設計得出符合設計指標的結構參數，主要包括:發射區的摻雜濃度和厚度?基區的摻雜濃度和厚度及基區中ge的組分比?集電區的摻雜濃度和厚度。
  4. Whether the seeding absence alarm device works well or not is mainly decided by anti - dust condition of seeding absence monitoring sensor. it had been analyzed the factors affecting the anti - dust performance of optoelectronic sensor. double - way laser reverse direction sensor has been made ( anti - dust index access to 0. 95, while the index of the led only reach 0. 5 around )

    本研究從器件、結構、放大電路等多方面分析了影響光電傳感器抗塵性能的因素，製作了雙路激光逆向直射傳感器（根據本文提出的量化方案抗塵指數可達0 . 95 ，一般led光電傳感器為0 . 5左右） 。
  5. In the unlikely event of a nuclear accident or a suspected nuclear accident at gnps and lnps, the objective of emergency radiation monitoring is to obtain timely and comprehensive information on the environmental radiation levels in hong kong for assessing nuclear accident consequences and considering necessary

    應急輻射監測是指在核電站發生或懷疑發生核事故時，對環境輻射水平進行監測。其目的是為了快速和詳盡地收集輻射數據，以協助評價核事故後果及考慮應採取的
  6. First, in virtual of identification of flaws is a typical of in - verse problems, proceeding from time - harmonic electromagnetic maxwell ' s equa - tion and helmholtz equation, the uniqueness and existence of direct scattering problems including the numerical algorithms of diverse of boundary conditions is given. second, the uniqueness and existence of inverse scattering problems and the theory of ill - posed integral equation are briefly looked back upon. finally, indicator function method for boundary identification is set up under all kinds of boundary conditions for inverse scattering of homogenous and inhomogenous objects, meanwhile, the proof of possibility for near - field measurements and nu - merical simulation are given

    由於缺陷的識別是一類典型的反問題，因而首先從時諧電磁maxwell方程和helmholz方程出發，具體地闡述了求解正散射問題的有關方法，包括各種（夾雜）邊界條件下的數值解法，就解的存在性唯一性給予了肯定的回答；隨后對逆散射問題的理論作了簡短的回顧，包括解的唯一性以及非線性不適定積分方程的處理等；然後對均勻介質和非均勻介質的逆散射問題建立了在各種邊界條件下的邊界識別的指示函數方法，鑒于近場數據獲得的重要性，對近場測試時邊界識別的方法給予了相應的證明，並且實現了數值模擬。
  7. Characteristics of electro - optical x - ray image intensifiers for medical electrical equipment - determination of the contrast ratio and veiling glare index

    醫用電氣設備.電光x射線圖象增強器的特性.第6部分:對比率和雜光指數測定
  8. Medical electrical equipment. characteristics of electro - optical x - ray image intensifiers. part 6 : determination of the contrast ratio and veiling glare index

    醫療用電氣設備.電光x射線圖象增強儀特性.第6部分:對比率和雜光指數的測定
  9. A niched - penalty approach is used to transform this optimal kinematical design problem to an unconstrained one. a kinematic accuracy comparison of the genetic designed fine - tuning stewart platform with the quasi - newtonian designed one is made. the comparison results have shown that the kinematic accuracy of the genetic designed fine - tuning stewart platform has a much higher accuracy and a compact structure than that of the quasi - newtonian designed one, which guarantees the accomplishment of high precision trajectory tracking and reduces the disturbance of wind to the feed - supporting system

    以並聯機器人jacobian矩陣的條件數為優化設計的目標函數，提出了基於遺傳演算法的並聯機器人最優運動學性能結構參數優化設計方法，採用實值遺傳演算法，對精調stewart平臺進行了優化設計，得到了最優運動學的精調stewart平臺結構參數，為實現新一代大射電望遠鏡饋源指向跟蹤系統高精度軌跡跟蹤控制奠定了堅實的基礎。
  10. In order to utilize the frquency resource adequately and increase the capacity of mobile communication system, the wireless electric wave propagation of existing mobile system always adopts the microcell structure. forecasting the path loss characteristic of electric wave accurately can provide the necessary condition for the layout and design of wireless network, at the same time it is a precondition for the research on the microcell mobile system. the methods of forecasting of wireless electric wave propagation can divide into two parts : one is pluse and respond, that is establish the empirical model based on experimental and statistical data ; the other is ray tracing method, that is establish the deterministic model based on theoretical analyse. the paper discuss the characteristic of wireless signal electric wave transmition in symmetrical atmosphere of earth, and introduce the common path loss transmition model in land mobile communication system, also point out the localization of these models based on experiential methods

    而精確預測無線電波傳播路徑損耗特性，則為合理的微蜂窩無線網路規劃、設計提供了必要條件，同時也是研究微蜂窩移動通信系統性能的前提。無線電波傳播預測的方法分為兩類：一是用沖激響應法，即根據實驗、統計所得數據建立經驗性傳播預測模型；另一種是用射線跟蹤方法，即依據理論分析來建立確定性的傳播預測模型。本文首先討論了在地球表面均勻大氣中的無線電波傳播的基本特性，介紹了陸地移動通信系統中常用的幾種電波傳播路徑損耗經驗性預測模型，並指出了這些經驗性傳播模型對于微蜂窩小區無線電波傳播特性研究的局限性。
  11. After target is detected the on - board avionics suite in combination with the automatic control system of the helicopter solve the task of bringing the helicopter to the designated point and automatic firing of the weapons selected by the pilot

    當捕獲目標后，機上的自動控制系統與電子系統將解算任務數據，引導直升機飛向敵潛艇水域，並在飛行員指令準許下自動發射武器進行攻擊。
  12. The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material

    本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。
  13. In normal optical fibres made from materials with positive refractive indices, this makes the effective thickness of the cable greater than its physical thickness

    在正常的用具有正折射指數製作的多個光導纖維中，這種情況會讓電纜的有效厚度高於它的實際物理厚度。
  14. 2 ) the theoretical analysis and experimental verification are also given in this thesis. also, the theoretical model of this technique is performed in detail

    2 ）本文建立並分析了數控噴射電鑄的理論模型，為實驗提供了理論指導。
  15. Air quality. stationnary sources emissions. determination of an index for the gaseous organic content. flame ionization method

    空氣質量.固定源輻射.氣體有機化合物含量指數的測定.火焰電離子化法
  16. This paper studies dielectric characters of rain and fog, calculate the equivalent complex refraction constant of rain and fog and find them prediction models using linear and non - liner system identification method, get average value of complex refraction constant in different rainfall rate range of rain

    本篇論文利用系統辨識方法（線性、非線性）研究了雨、霧的介電特性，計算了雨的等效復折射指數，給出了其預報模型及不同降雨率區間上的平均值；計算了霧的等效復折射指數，給出了預報模型。
  17. During development db935, the main responsibilities as follows : 1. the db935 ’ s sizes, electrical parameters, interelectrode capacitance and the transmitter dynamic parameters must be same as those of th558 so that it can be applied to replace th558

    在負責db935的研製工作中所做的主要工作如下: 1 、為使研製出的db935發射管能與進口的th558電子管互換使用， db935的外形尺寸、主要電參數、各電極間的電容以及整機動態指標均須與th558一致。
  18. Standard test methods for refractive index and specific optical dispersion of electrical insulating liquids

    電絕緣液體折射指數和比光散度的標準試驗方法
  19. The correlation between broad - band spectral index and peak frequency for xbls and fsrqs

    和平譜射電類星體間峰值頻率與光譜指數的相關性分析
  20. In 1987, a remarkable step was made by yablonovitch, who pointed out the possibility of the realization of photonic bandgaps, localized defect modes, and their applications to various optoelectronic devices, and by john who dicussed the strong localization of electromagnetic waves in disordered photonic crystals and also predicted many interesting quantum optical phenomena that can be realized in photonic crystals such as the bound state of photons and non - exponential decay of spontaneous emission

    1987年yablonovitch和john開創性地提出光子晶體這一新概念， yablonovitch指出了有可能實現光子頻率帶隙和局域缺陷模以及許多光電技術方面的應用， john則討論了在無序光子晶體中電磁波的強烈局域現象，並預言在光子晶體中存在許多有趣的量子光學現象，諸如光子局域態、自發輻射的非指數衰減。
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