excited-field 中文意思是什麼
excited-field
解釋
勵磁場-
An atom on an excited upper level can execute a downward transition not just spontaneously but also when photons of the radiation field surrounding the atomic interact with it.
處在較高的激發態上的原子不只可以自發地而且可以在它與原子系統周圍輻射場的光子相互作用時發生向下的躍遷。 -
It is the main purpose of this paper to calculate the energy splitting of ground state and excited states induced by thermally assisted quantum tunneling. first, a brief introduction is given for the theoretical and experimental studies on the magnetic macroscopic quantum effects. then, spin tunneling in a uniaxial ferromagnetic particle in transverse magnetic field is converted to a pseudoparticle moving in effective double - well potential with the help of the effective potential description of quantum spin systems developed by ulyanov and zaslavskii. finally using the periodic instanton method we evaluate the transition amplitude, energy shift and prefactor of wkb exponential and the energy splitting of ground state and the tunneling rate for excited states induced by thermally assisted quantum tunneling are obtained
文章首先對磁性宏觀量子效應的理論和實驗方面作了簡單介紹，然後藉助于ulyanov和zaslavskii發展的一種等效勢描述方法，把外磁場沿難磁化軸方向時的自旋隧穿約化成在等效雙勢阱中運動的粒子，利用瞬子方法給出基態能級劈裂，最後利用周期瞬子方法分別計算了隧穿幅、能級移動以及wkb前因子，從而給出由於熱助量子隧穿引起的激發態的隧穿率。 -
The radiation patterns with and whitout radome are calculated, and the angle difference in the maximum field point of their main clot show the bse of the radome, the bse from - 15 degree to 15 degree in direction, that been calculated and compared with the excited experimented data shows they coincide quite well
有天線罩時的遠區場和沒有天線罩時的遠區場相比較，兩個主波束對應的角度差即是天線罩的瞄準誤差，本文對方位掃描角從負15度到正15度進行分析。 -
An efficient wind field simulation technique for wind - induced vibration analysis of long - span bridges is first introduced in this paper ， and the statistic characteristics of the simulated wind field are then discussed on this basis ， the time - domain expressions for the buffeting and self - excited forces acting on long - span bridges are further given a simple and practical method is presented for the non - linear parameter identification involved in the calculation of self - excited forces by using the above theory ， the wind field and aerodynamic forces acting on the hong kong ting kau bridge are obtained the time - domain buffeting response analysis of the bridge shows that the analytic results agree quite well with the experimental ones this indicates that the theory presented in this paper has reached a practical level
介紹了一種快速高效的用於大跨度橋梁風致振動分析的風場模擬方法，並對模擬風場的統計性質進行了討論和驗證在此基礎上進一步給出了大跨度橋梁抖振力和自激力的時域表達方式，其中針對自激力計算中涉及的參數識別問題，提出了一種簡單實用的非線性參數識別方法本文採用上述理論，獲得了作用於香港汀九大橋上的風場和氣動力，據此對大橋進行的抖振響應時域分析表明，計算結果與風洞試驗結果吻合良好，說明文中述及的這套理論已達到實用的階段 -
Based measured aerodynamic parameter and simulated wind speed field, time - domain expression of static wind load, buffeting load and self - excited load for bridge and vehicle are introduced
基於測試的氣動參數和模擬的脈動風速場，給出了車輛和橋梁靜風力、抖振力及自激力的時域表達式。 -
Secondly, to achieve the independent regulation of active and reactive power output from the generator side which is designed for the purpose of tracing the maximum wind - energy capturing. the paper has analyzed the mathematic model of the ac excited doubly - fed machine and the stator field orientation control strategy of the motor as vscf wind power generator. thirdly, it has put forward and designed the dual pwm converter with the capacity of energy flowing bidirectional aimed at the demand of rotor energy bidirectional flow. the author constructed reliable and integrated experimental system and did a series of experimental study including no - load, cutting - in network and power generation at, below and above the synchronous speed
論文首先分析了風機運行特性及其最佳風能利用原理，通過模擬及實驗驗證了採用直流電機的輸出特性模擬風力機的最大輸出功率曲線的可行性，並給出了模擬系統的硬體結構；然後為了實現交流勵磁發電機有功、無功功率獨立調節機理，分析了交流勵磁雙饋發電機的數學模型和在追蹤最大風能捕獲變速恆頻風力發電時必需的定子磁鏈定向矢量控制策略；針對雙饋發電機轉子能量雙向流動的要求，提出並設計了具有能量雙向流動能力的雙pwm交流勵磁用變頻器；最後為實現從理論到實踐的全面研究，研製出了一套小功率完整的雙pwm變頻器交流勵磁的雙饋風力發電機實驗系統，進行了空載、並網、同步速及上、下的發電運行等一系列的運行實驗；所完成的模擬和實驗研究均驗證了理論、模型和控制策略的正確性、可行性。 -
Matlab procedure is coded to compute the far - field sound pressure levels of the shell excited by radial point force. the influences of modal truncation, stringers, bulkheads and damping on the shell ' s far - field sound pressure are analyzed, laying down the basis for accurate analysis of the sound radiation from fluid - loaded reinforced double cylindrical shells
本文用matlab編製程序求解了單層殼在徑向激勵力作用下的遠場聲壓級，分析了模態截斷數、縱骨、艙壁板、結構阻尼等因素對殼體遠場輻射聲壓的影響，為準確計算加筋雙層殼在水下振動和聲輻射特性奠定了基礎。 -
We calculated the states " binding energy in finite and infinite quantum well with different width of well such as 10 a, 20 a 30 a 50 a 70 a 100 a. we obtained the well width that some low - lying excited states appeared in strong field and in fixed well width the value of magnetic field when these states began appear
我什計算了在階寬為10a 、 20a 、 30a 、 50a 、 70a 、 100a的有限深和無限深量于階中的廠中心的束縛態，得到一些二維廠中心所沒有的低激發態在強磁場下出現時的階寬，以及一些態在某一階寬下出現的臨界磁場值。 -
Non - classical physical properties of the displaced excited coherent states of the radiation field
輻射場平移激發相干態的非經典物理特性 -
I am very excited to learn that your esteemed company is recruiting personnel in the field of web design in which i hold high interests. with my special background and experiences in this field, i am confident that i can successfully fill in this position, and perform my job effectively and efficiently
聽聞貴公司正招募人才，本人對此一職位非常感興趣，以本人藝術及設計之專業及多年參與各項活動規劃必能勝任貴公司之職務，如蒙錄用，必當竭誠工作貢獻一己之長。請貴公司慎重考慮本人之應徵。 -
The mathematical model of non - linear transient magnetic field excited by voltage source is established in this paper. it coupled with electric circuit equation and mechanical motion equation, could solve the transient problem excited by voltage source, and the effect of the eddy currents, non - linearity in magnetic materials and mechanical motion of medium is taken into account
文中建立了電壓源激磁下的非線性瞬態磁場的數學模型，通過把瞬態磁場方程、電路方程及機械運動方程耦合在一起，得出求解電壓源激磁下，考慮鐵磁材料的非線性、導電媒質的渦流及媒質機械運動等條件下的瞬態過程問題。 -
According to the result, we found whether the atom outside of the field is manipulated in the excited state or in the ground state, the probabilistic distribution of the atom inside the field does n ' t change
當糾纏態原子中只有一個原子在場內運動時，各能級均分裂成兩層；而當兩原子均處于場內時，原激發態和基態有著不同的能級分裂。 -
Conventional magnetic field form used in welding technology including horizontal magnetic field, vertical magnetic field and sharp - angled magnetic field, mainly excited by dc, ac and pulse excitation
傳統的外加磁場形式主要包括橫向磁場，縱向磁場和尖角磁場等幾種，勵磁方式主要採用直流、交流以及脈沖勵磁等。 -
Sometimes cavitation and self - excited oscillations may exist in the jet flow field. they may performance and lifetime of the servo valve
射流流場產生的氣穴不僅破壞流體的連續性，而且還引起振動和噪聲，直接影響到閥的性能與壽命。 -
The rule of induction bow attenuation wave that is excited first field and formed in internal will be different with the difference of electric capability of geology body and existence position. so this method can resolve geology question and predigest consumedly research of geology object abnormity
隨地質體導電性能及空間賦存位置的不同，感應渦流衰變的規律也有所不同，通過分析和研究二次磁場的時空變化特徵，達到解決地質問題的目的，因而大大地簡化了對地質目標體所產生異常的研究。 -
Conjugate structure algebraic code excited linear prediction was approved as itu recommendation in 1996 based on the project of usa at & t, japan ntt, franc telecom and canada sherbrooke university. cs - acelp based on adapt linear prediction is one of the most sophisticate algorithms in the field of low bit rate speech coding
共軛結構代數碼激勵線性預測語音編碼（ conjugatestructurealgebraiccodeexcitedlinearprediction簡稱cs - acelp ）演算法是1996年國際電信聯盟（ itu ）根據美國at & t 、日本ntt 、法國電信和加拿大sherbrooke大學聯合提出的方案而制定的，它是最復雜低數碼率語音壓縮演算法之一。 -
Since the situation of each person is different, his magnetic field is also different. since like attracts like, greedy or easily excited people will naturally attract excitement to their magnetic fields. similarly, gentler people will attract gentler situations
同類相吸，異類相斥，比較貪或比較激動的人，當然會吸引比較激動的情況到自己的磁場來，比較柔和的人，吸引比較柔和的東西，這就形成了所謂的業障。 -
The paper proves that in the 2d non - linear case, the coulomb gauge is been meet naturally. in the paper, the second - order isoparametric fem is adopted in the non - linear transient magnetic field simulating excited by current source and the results of transient field and static field solved by the second - order isoparametric and linear fem are compared and analyzed, besides, the effect of the eddy currents in the magnetic materials of the different conductivity is analyzed, it is obtained that the magnetic material of high magnetic conductivity and low loss should be chosen in designing of pma
文中採用二次等參元有限元法推導出在電流源激磁下的非線性瞬態磁場的計算方法和編制了相應的計算程序，並採用二次等參元有限元法和雙線性有限元法分別對瞬態場和靜態場進行了計算，並對計算結果進行了誤差分析，此外，還對不同電導率的導磁材料中渦流產生的影響進行了分析，得到結論設計永磁操動機構時，應選擇導磁性能好，損耗低的導磁材料。 -
Ultrasonic motor ’ s vibration is excited by the conversely piezoelectric effect of piezoelectric materials. with the friction coupling, the rotation of the rotor or moving of the slider is generated. as a direct driving motor, it is becoming a hotspot in the field of mechanical and electrical control
超聲波電機利用壓電陶瓷的逆壓電效應產生超聲振動，並將這種振動通過摩擦耦合來直接驅動轉子或滑塊的運動，它作為一種直接驅動電機已成為當前機電控制領域的一個研究熱點。 -
It has also been shown that : the kerr medium and the interaction of atoms will influence the periodicity of the evolution of the fie ld entropy, make the connected degree between field and atoms weaken ; the excited field intensity n also influence the periodicity of the evolution of the field entropy, the connected degree between field and atoms is strengthened first and is weakened later when n increases
數值計算結果還表明： kerr介質和原子間的相互作用都影響著場熵演化的周期性，並使光場與原子的關聯程度減弱；初始場強（ ? ）同樣影響著場熵演化的周期性，且隨著初始場強（ ? ）的增加，光場與原子的關聯程度先增強后減弱。
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