excitation radiation 中文意思是什麼

excitation radiation 解釋
激勵輻射
  • excitation : n. 1. 刺激，興奮，激發，鼓舞。2. 【物理學】激發；【電學】激勵、勵磁。3. 【植物；植物學】激感（現象）。
  • radiation : n. 1. 發光，射光，放熱，放射，發射。2. 【物理學】輻射；放射物；輻射線[熱、能]；照射（作用）。3. 【動、植】輻射形；【測】射出測量法；【醫學】射線療法。
  1. Excitation radiation may do this by penetrating to the cathode and ejecting a photoelectron.

    激發輻射可能射到陰極，逐出一個光電子，從而引起這個。
  2. The different excitation sources are pulsed to give intermittent radiation.

    各種激發源形成脈動，以產生間歇的輻射。
  3. The conformal microstrip antenna with some unique character has been applied in many fields, especialy on speedy objects. in this paper, an efficient fdtd algorithm is introduced to analyse the microstrip antenna. firstly, the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space. the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively. the shape and setup of the excitation source are discussed too. the excitation source is chosen to be gaussian pulse in shape. secondly, the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system. the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone. finally, three kinds of microstrip antennas are analysed. they are a slot antenna that lies on a plane ground of a microstrip, a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system

    本文從麥克斯韋旋度方程出發，建立了笛卡兒坐標下無源空間中均勻無耗媒質的fdtd基本方程和圓柱坐標下無源空間中均勻無耗媒質的fdtd基本方程，詳細討論了fdtd法計算中時間步長和空間步長的選取原則以及激勵源的類型和設置；推導了mur一階和二階邊界條件在圓柱坐標下的差分格式；給出了在用fdtd法計算天線的遠場輻射特性時必需採用的頻域和時域近場遠場變換技術；最後用fdtd法計算了平面微帶縫隙天線、柱面共形微帶縫隙天線和柱面共形微帶層疊天線的輸入阻抗和遠區輻射場，並分析了天線的一些參數的變化對天線輸入阻抗的影響，得出了一些有用的結論。
  4. The submarine structure is simplified to single or double infinite cylindrical shell stiffened with rings, bulkheads and stringers, focusing on underwater sound radiation from the single shell. the shell motion is described by donnell ' s theory including excitation forces and reactions of rings, bulkheads, stringers and fluid, which leads to the fluid - structure coupling vibration equation. expressing displacements by velocities, applying modal expansion circumferentially and fourier transformation longitudinally result in the shell ' s modal equations of motion

    殼體的運動方程採用較為簡單的donnell理論描述，運動方程中包括了激勵力、加筋結構（環肋、艙壁和縱骨）和流場對殼體的作用力，從而組成流場-結構的耦合振動方程，並進一步將方程中的位移用速度表示，然後沿軸線方向進行fourier變換，將速度和各項荷載沿圓周方向進行模態展開，得到了殼體振動的模態運動方程。
  5. The aluminates are used as the base and the rare earth materials are used as the luminescence center and trap center. the excitation resource can be visible light and man - made light, so this type of long persistent phosphor has the advantages of no - radiation and no need of electricity

    它以鋁酸鹽陶瓷材料為基質，以稀土材料作為摻雜元素形成發光中心和陷阱中心，激發源可以為日光或人造光源，無污染，不消耗電能，是一種高效節能的固體發光顯示材料。
  6. The indicators quin - 2, indo - land fura - 2 have the advantage of wavelength - shift upon binding ca2 + but share a common drawback in that the excitation bands for these indicators occur at uv wavelength ( 340 - 360nm ), where autofluorescence from cells is high, radiation - damage of cellular structures is serious, the transmission of microscope optics is poor, and the availability of aberration - corrected optics for confocal microscopy is limited

    迄今為止，尚未見既可長波激發、又與ca ~ （ 2 + ）結合后熒光峰位移、且對胞內ca ~ （ 2 + ）測定具特異性、可在亞細胞水平進行ca ~ （ 2 + ）測定的整體性能優良的鈣熒光探針及其在生命科學中的應用研究報道。
  7. In the paper, an experiment set - up was designed and manufactured for tl measurement and measured tl curves of silicone rubber aged by radiation and pet both by uv photon excitation, then analyzed the curves

    本文設計與製作了測量熱釋光的裝置，用該裝置分別測量了輻照老化后的硅橡膠以及紫外光激發下的聚酯薄膜的tl譜，並對曲線進行了分析。
  8. Luminescence is caused by chemical, biochemical, or crystallographic changes, the motions of subatomic particles, or radiation - induced excitation of an atomic system

    發冷光是由化學，生化或結晶變化，亞原子顆粒的運動，或原子系統的輻射產生的。
  9. A rectangular box simulating the axial box of the lathe tool is manufactured ; experimental measurements of the surface vibration on the rectangular box and the acoustic field around the rectangular box corresponding to firstly a series of a homogeneous excitation and secondly two iii independent white noise excitations are taken in a semi - anechoic chamber. taking the vibratory properties as input, the properties of the sound field are calculated by the evsbpm and the sdsbpm respectively. the effectiveness and reliability of the evsbpm and the sdsbpm for the calculation of acoustic radiation problem is further verified from the comparison of the calculated results and measured ones

    第五章設計加工了一模擬機床主軸箱的長方箱體，在半消聲室環境下，分別對其在單點處一系列簡諧激勵作用下和兩點處的獨立白噪聲激勵作用下的振動及其輻射聲場進行了實驗研究和分析計算，通過計算結果和實測值之間的比較，進一步驗證了改進體積源邊界合肥工業大學搏士學位論文點方法和統計分佈源邊界點方法計算振動聲輻射問題的有效性和可靠性。
  10. Apart from x - rays which are emitted by excitation of electron clouds, most of the ionizing radiation come from the

    射線是由受激發的電子云射出，而其他的電離輻射主要是由
  11. By use of effective point mobility, the demerits of traditional study of mobility can be made up, and effective point mobility makes the investigation of the vibration and radiation of structures under complicated excitation possible, which exists in real world widely

    系統地、清晰地論述了有效點導納的定義和其特點，有效導納不僅可以彌補傳統導納研究中存在的局限性，而且將實際工程中普遍存在的復雜激勵的問題納入了研究范圍。
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