磁優值 的英文怎麼說

中文拼音 [cíyōuzhí]
磁優值 英文
magnetic figure of merit
  • 磁 : 名詞1. [物理學] （磁性; 能吸引鐵、鎳等的性質） magnetism 2. （瓷） porcelain; china
  1. Hunan aero - magnetoelectricity co., ltd ( short for am following ) is a state - owned enterprise with production value of a hundred million yuan per year. with the expanding scale, converting operation system and more extensive competition, the corporation has more commands in information, and tries to improve the enterprise manage efficiency and lever even the core competition by the means of all - round carrying out the erp system, introducing advanced modernized management, optimizing and reforming the enterprise organizing structure and operation circuit

    湖南航天磁電有限責任公司是一個年產值近億元的國有企業，隨著公司規模的不斷擴大，運行機制的轉變，市場競爭的加劇，公司對信息化的需求越來越高，希望通過實施erp系統，引入先進的現代化管理，對企業組織結構、業務流程的優化和組合，全面提高管理效率、管理水平，並最終提高企業核心競爭力。
  2. Lottery ticket, scratch cards, shave the award card, shave the card, click and nip, the game card, pvc card, rechargeable card, it is good that the card speciality of telecommunications is made to you ! we are specialities to make lottery ticket, shave the card, reward the card, shave the award card, tear the card, opening card, it is happy to shave, take off the card, lottery tickets, not doing the glue, the anti - counterfeit card, lottery - attached ticket, etc. : promoting modernly indispensably, the paper card, paper rechargeable card, pvc network game is clicked and nipped, game card, the phonecard, the card of surfing internet, telecommunication card, read the card, the film is clicked and nipped, monthly card, ip card, ic card, honored guest s card, membership card, favourable card, magnetic stripe card, etc.

    獎券刮刮卡獎卡刮獎卡撕開卡揭開卡點卡游戲卡揭揭卡彩票電碼防偽數碼防偽物流防串貨系統800免費電話查詢系統網站查詢系統簡訊查詢系統不幹膠獎券學習卡閱讀卡晶元卡智能卡刮刮樂防偽卡電話卡上網卡閱讀卡電影點卡包月卡ip卡充值卡有獎門票噴碼順序碼， pvc卡貴賓卡會員卡優惠卡電信卡磁條卡條碼卡銀行貴賓卡證券卡有像證件卡接觸式ic卡非接觸式ic卡m1卡id卡服裝吊牌等各種卡類
  3. We are specialities to make lottery ticket, shave the card, reward the card, shave the award card, tear the card, opening card, it is happy to shave, take off the card, lottery tickets, not doing the glue, the anti - counterfeit card, lottery - attached ticket, etc. : promoting modernly indispensably, the paper card, paper rechargeable card, pvc network game is clicked and nipped, game card, the phonecard, the card of surfing internet, telecommunication card, read the card, the film is clicked and nipped, monthly card, ip card, ic card, honored guest s card, membership card, favourable card, magnetic stripe card, etc. : game, film, reading, examination websites are indispensable ; gush out yard, the substandard association of yard of the order takes the place of the company processed

    獎券刮刮卡獎卡刮獎卡撕開卡揭開卡點卡游戲卡揭揭卡彩票電碼防偽數碼防偽物流防串貨系統800免費電話查詢系統網站查詢系統簡訊查詢系統不幹膠獎券學習卡刮刮卡晶元卡智能卡刮刮樂防偽卡電話卡刮刮卡閱讀卡電影點卡包月卡ip卡充值卡有獎門票噴碼順序碼， pvc卡貴賓卡會員卡優惠卡電信卡磁條卡條碼卡銀行貴賓卡證券卡有像證件卡接觸式ic卡非接觸式ic卡m1卡id卡服裝吊牌等各種卡類
  4. Using the particle - in - cell ( pic ) model, a 8 millimeter relativistic backward wave oscillator underlying superradiance mechanism was gotten, the influence on both operation frequency and radiation efficiency of the guiding magnetic field, the diode voltage, the beam current and the beam radius as well as the corrugation structure were also presented

    採用pic方法，通過數值模擬優化設計了超輻射狀態下的8毫米相對論返波振蕩器，分析了引導磁場、二極體電壓、電子束流、電子束半徑、周期慢波結構等對器件的輻射功率及輻射效率的影響。
  5. Cerium - substituted yttrium iron garnets ( cexy3 - xfe5o12, ce : yig ), the promising materials for magneto - optical ( mo ) application, have been widely attended for great improvement on faraday rotation due to the substitution of ce3 + ions to y3 + ions. however, studies on synthesis of ce : yig were restrained by two factors : the first was radium of ce3 + ions were much larger than that of y3 + ions, the second was ce3 + ions tended to transfer to ce4 + ions which were more chemically stable

    摻鈰釔鐵石榴石（ ce - substitutedyttriumirongarnets ，簡稱ce ： yig ）中，由於ce ~ （ 3 + ）離子對y ~ （ 3 + ）離子的取代，將大大提高釔鐵石榴石（ yttriumirongarnets ，簡稱yig ）磁光材料的法拉第旋轉角和磁光優值，使其能夠廣泛應用於激光和光通信等高技術領域。
  6. Moreover, the block time - recursive 2 - d rdgt algorithms and their unified parallel lattice structure implementation are extended from 1 - d rdgt case. three applications of the rdgts are investigated : gabor representation for transient signals via the rdgts, mnr fid signal enhancement via the oversampled gabor transforms, representation and approximation of time - varying systems via the rdgts. the experimental results show the efficiency and advantages of the rdgts in applications

    研究了基於實值離散gabor變換的瞬變信號表示演算法、基於過抽樣實值離散gabor變換的核磁共振fid信號增強演算法以及基於實值離散gabor變換的線性時變系統表示與逼近方法，實驗結果驗證了實值離散gabor變換在應用方面的優越性和有效性。
  7. We optimized to derive the merv input shaper and compare it to other input shapings. through the comparison, we can find out that the merv shaping yield the better performance than the others. we can also derive the hybrid input shapers if we simplify the optimal process

    並應用merv （最小余振平均值）輸入成型方法，以磁頭定位系統為模型，通過數值優化過程求解出最優的merv輸入成型器和次最優的混合輸入成型器。
  8. The x - ray diffraction, scanning electronic microscope and the squid were used to characterize the properties of the mgb2 core in mgb2 / fe tapes and wires. the effect of the proportion of mg, b and sic as well as the sintering parameters on the phase formation, microstructure and the critical current densities of mgb2 / fe tapes and wires was discussed in details. the results showed that the high purity of mgb2 core could be synthesized by both the traditional vacuum sintering and the sparking plasma sintering and the vacuum sintering environment restrained the oxidation of mg effectively

    相對于傳統真空燒結， sps燒結方式成相速度快、樣品晶粒細小均勻、 mgb2超導芯緻密性好、晶間連接優良，因而sps燒結樣品的臨界電流密度明顯高於傳統真空燒結樣品，其中未摻雜的帶材樣品經過sps800 ， 15分鐘燒結后，自場下的臨界電流密度jc值在10k時達到8 . 64 105a / cm2 ，而且隨著測量溫度和外加磁場的增加， sps燒結樣品的臨界電流密度下降率比傳統真空燒結樣品緩慢，在20k ，自場時為5 . 97 105a / cm2 ， 20k ， 3t時，臨界電流密度值仍大於104a / cm2 。
  9. Then a thorough analysis to the bias - magnetic of ppfc is made. the retraining effects of the main parameters ( include clamping capacitance c, output filter inductor lf, load r, the leakage inductor ls and source winding resistance r ) are studied under the conditions of different von, different ton and different winding parameters. then a conclusion can be drew, that the smaller lf and the bigger r are, the better the bias - magnetic is restrained and c has a best value to retrain the bias - magnetic

    分別對管壓降不同，導通時間不同以及兩原邊繞組參數不一致（包括漏感、電阻、激磁電感三種情況）的情況下，主要參數（包括箝位電容c 、輸出濾波電感lf 、負載r 、原邊繞組漏感ls 、原邊繞組電阻r ）對偏磁的抑制作用進行了模擬分析研究，得出lf越小， r越大時激磁磁勢偏移量ni越小， c在其他參數確定時對抑制偏磁有最優值等結論，為參數的優化設計提供了依據。
  10. So there are good prospects for alternating current excitation generators. in this thesis, the operation principle of aceg and the excitation control strategy based on dynamical synchronous reference frame are analyzed, the simulation models of the generator and excitation controller are established based on the saber simulator. according to the requirement of aceg, the converter should have regeneration capability, and the input and output currents of converter should be sinusoidal

    由於交流勵磁發電機既可能運行於勵磁系統向電機轉子方輸入電功率，也可能運行於勵磁系統將轉子方輸出的電功率回饋給電網，根據交流勵磁發電機系統對勵磁變頻器功率雙向流動及變頻器輸入和輸出電流諧波含量少、諧波幅值小的要求，本文提出採用輸入和輸出性能優良的矩陣式交-交變頻器作為勵磁電源。
  11. With the best modulation strategy which was found on condition that it must have largest energy transfer ratio, smallest current ripple of the inductor, and realizing zvs of each switches, the converter overcomes the drawbacks presented by the conventional zvs fb converter, such as high voltage stress of each switches, large current ripple of the inductor, and severe parasitic ringing on the rectifier diodes, so it can get higher efficiency, faster respond speed, and wider application area. the operation principle of the proposed converter is analyzed and verified by a 3kw, 50khz experimental prototype. experiments and research results show that the scheme of the tl topology derivation is reasonable, adjusted modulation strategy makes some other severe problems in conventional topologies easy to solve or makes the converter more competitive

    研究結果表明，本文提出的三電平拓撲變換方案合理，針對各種三電平拓撲尋找到的控制策略可以解決變換器存在的某些問題或使變換器表現出更突出的優勢：例如針對單管直流變換器三電平拓撲的控制策略可以減小電感的設計值，針對推挽直流變換器三電平拓撲的控制策略可以實現開關管的軟開關、解決變壓器偏磁問題等，針對全橋直流變換器三電平拓撲的控制策略可以減小電感的設計值、實現開關管的軟開關等。
  12. The single observer passive location and tracking system ( soplat ), which uses electromagnetic wave emitted by target, has proved its merits of self - hiding and far - distance detecting in modern electronic warfare and information warfar

    在現代電子戰、信息戰環境中，由於利用目標輻射電磁信息的單站無源探測定位系統具有機動性強、自身隱蔽和探測距離遠等優點，因此它具有重要的應用價值。
  13. The passive location and tracking system, which uses electromagnetic wave emitted by target, has proved its merits of self - hiding and far - distance detecting in modern electronic warfare ( ew ) and information warfare. and it is now the hotspot in the field of non - linear tracking and estimation

    在現代電子戰、信息戰環境中，由於利用目標輻射電磁信息的無源探測定位系統具有自身隱蔽和探測距離遠等優點，因此它具有重要的應用價值，並已成為當今非線性跟蹤與估計研究領域的熱點問題。
  14. We took the high frequency flyback converter design as an example and made a calculation model of the total loss of the high frequency flyback transformer. on basis of the caculation model combined with the systemic method of designing dc - dc converter, and the method which is base on the current shape, is presented to achieve the appropriate parameters of the flyback transformer, an optimized approach to design high frequency dc - dc converter is given in this paper. the appropriate parameters were achieved by genetic algorithm. through this method, a practical high frequency flyback

    2 .在理論分析的基礎上，以優化高頻變壓器的磁芯損耗和繞組損耗為目標，以單端反激式變壓器為例建立了高頻變壓器的總損耗計算模型，在該損耗計算模型的基礎上結合從系統角度設計dc - dc變換器的方法和考慮電感電流波形對變換器設計的影響，採用一種基於遺傳演算法的高頻dc - dc變換器的優化設計方法，該優化方法實現是通過遺傳演算法計算得到設計參數的最優取值。
  15. The results of calculation prove : the new structured coaxial probe is superior to the traditional coaxial probe in both sensitivity and penetrating depth when used to measure the dielectric properties of chemical reactants or layered biological tissues, and the relationship between the measurement sensitivity of this new structured probe and the frequency of electromagnetic wave are obtained, which provides the optimal frequency for the actual application

    計算結果表明：在化學反應溶液及生物分層組織介電特性參數的測量中，這種新型的同軸探頭在測量靈敏度及透入深度兩方面都優于傳統的平口同軸探頭。通過計算模擬還得出了這種新型同軸線探頭的測量靈敏度與電磁波頻率的關系，為進一步研究其最佳測試頻率提供了有價值的參考依據。
  16. Characters of the flow field of molten metal in mhd caster are s imulated and analyzed by means of numerical simulation. relationship between flow field of molten metal and the number of magnet poles, arrangement of magnet pole s, rotating velocity of magnetic field as well as helical arrangement of permanen t magnets is revealed. it can be used as reference for optimizing design of perma nent caster

    利用數值模擬對不同磁場條件下的永磁鑄機金屬液流場特徵進行了模擬分析；揭示了金屬液流場與永磁體極數、磁極排布方式、磁場旋轉速率以及永磁體螺旋式排布之間的關系，為永磁鑄機的優化設計提供了參考依據。
  17. The hybrid claw - pole alternators have magnetic fields contributed by permanent magnet as well as excitation coil, and the advantages are high efficiency, have good low - speed characteristics, excitation adjustable and high flux densities. for the reason of complex claw - pole construction and 3 - d magnetic field distributions, there is lack of the research on the alternators

    混合勵磁爪極發電機是由永磁體和勵磁線圈共同產生電機磁場的一種發電機，與傳統的爪極發電機相比有高效、低速性能好和集線圈勵磁的電壓調節性能與高磁通密度的優點，具有很好的研究前景和使用價值。
  18. The simulation results show the existence of both limits and optima for the studied parameters, related to the stable operation and the maximum efficiency, respectively. underlying the conditions that the longitudinal guiding magnetic field is 1. 8t, diode voltage is 250 kv, the impedance is 150, we got a peak power as high as 100 mw for the tm01 mode at 38ghz

    經優化設計，本文給出了一個相對論亞納秒毫米波返波振蕩器的物理模型，在引導磁場為1 . 8t 、二極體電壓為250kv 、阻抗為150的情況下得到了超輻射狀態下輸出微波峰值功率為100mw 、中心頻率為38ghz 、模式為tm _ （ 01 ）模的微波輻射。
  19. Finally in chapter 6, the problems of boundary conditions and incident wave, as the most valuable problem of mrtd as a time - domain method, are studied. this chapter presents the simulation results of the electromagnetic propagation and its interactions with the dielectric slab and analyse of the graph of the reflection coefficient in frequency. compared with fdtd results, the numerical results, obtained using the mrtd method, show the directness and conciseness of mrtd as a time - domain method and the advantages in grid enlargement and saving computer resource etc.

    最後，第六章討論了mrtd作為時域數值技術最具實際應用價值的邊界條件設置和入射波加入等問題，並給出模擬電磁波傳播過程和介質板反射系數頻譜分析，其數值結果表明了mrtd作為時域方法的直觀簡練，與fdtd方法的結果比較，顯示了其在擴大網格、節省計算資源等方面的優勢。
  20. The advantages of this system are that the fluxes from the current model are easily obtained, all of the fluxes ( from voltage and current models ) are dc quantities, which are convenient for control and checking, and the system stability is easily analyzed. a further advantage is the avoidance of integration problems

    本系統的優點之一是磁通的指令值通過計算電流模型而獲得，所有的磁通量（電壓、電流模型）都是直流量，便於控制和檢查，系統的穩定性易於分析，另一個優點是利用磁通觀測器可以避免用電壓模型推算磁通時的積分運算問題。
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