有效電勢 的英文怎麼說

中文拼音 [yǒuxiàodiànshì]
有效電勢 英文
activate potential
  • 有 : 有副詞[書面語] （表示整數之外再加零數）: 30 有 5 thirty-five; 10 有 5年 fifteen years
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 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...
  • 勢 : 名詞1 （勢力） power; force; influence 2 （一切事物力量表現出來的趨向） momentum; tendency 3 （自...
  • 有效 : effective; valid; efficacious
  1. Secondly, according to the character of this kind of harmonic, the solutions of power filter are deeply analyzed and an optimized topology for series connected hybrid power filter is obtained. by pwm technique, midfrequency transformer and the principle of the magnetomotive force ( mmf ) compensation, the problem to the transfer of the low - frequency harmonic power compensatory signal in the series apf is solved, in technique

    其次，針對acem系統特有的「電源諧波」特性，深入分析了濾波器方案，得到了一種適用於acem系統諧波抑制的串聯混合型有源電力濾波器優化拓撲結構，並採用了pwm調制技術、中頻注入變壓器和磁勢補償原理有效地解決了串聯apf中低頻諧波功率補償信號傳輸的難題。
  2. The pre-emptive technology advantage is the potent combination of computers with communication.

    計算機與電信的有效結合形成了空前未有的技術優勢。
  3. The simulation results prove that this control technique can effectively minimize the torque ripple for the bldcm drives whose back - emf waveform crest width is less than 120

    模擬結果表明這種控制策略能有效地抑制反電動勢平頂寬度小於120電角的無刷直流電動機的換相轉矩脈動。
  4. Furthermore, this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor, torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode, 180 conduction mode and self - synchronous svpwm mode respectively. the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles

    對準正弦波反電動勢無刷直流電動機在120導通方式、 180導通方式和自同步svpwm三種控制方式下的轉矩脈動系數、轉矩電流比等方面進行了全面的分析與比較，模擬研究和實驗結果表明，當反電動勢的平頂寬度小於107電角時，採用自同步svpwm控制方法可以在不損失轉矩電流比的基礎上，更有效地抑制電磁轉矩脈動。
  5. Smart materials and structure have definite requirements of sensor components and driving components, for example, they can adhere well to the matrix and have higher strength, fatigue strength, more broad scope of frequency response and faster response speed, etc. piezodielectric ceramics have characteristic of easily preparing, heat - resistance, wet - resistance, high strength and broad scope of frequency response, etc. furthermore, it has piezoelectric effect and inverse piezoelectric effect, namely it can produce electric potential energy when it is transformed by mechanical strength and its mechanical dimension can be transformed when voltage is put on it

    壓電陶瓷能與基體材料很好結合，具有制備容易、耐熱、耐濕、強度高、頻響寬等特點，另外它具有正壓電效應和逆壓電效應，即當它受到機械力變形時，能產生電勢，對它施加電壓時，能改變其機械尺寸，因此它在智能材料結構中既能用作傳感元件又能用作驅動元件。
  6. After this article analyse generally the state of nationwide and worldwide aluminum industry, it has an in - depth analysis of the competitive structure of electrolytic aluminum industry hi our country with potter ' s five power structural analysis mode and thus we understand the opportunities and threats confronted with the enterprise. on the basis of careful study on the actual condition of zouping aluminum co., ltd., this article amis to find out the strengths and weakness of the enterprise. and with analytical approach of swot, a far - reaching plan of our company and an overall strategy that the longitudinal integration development is to be carried out are put forward and the measures about how to assure the implementation are raised in accordance with problems existed in the enterprise

    本文首先對世界鋁工業狀況和我國鋁工業狀況進行總括性的分析，然後運用波特的五要素結構分析模型對我國電解鋁行業競爭結構進行了深入分析，從而了解了企業面臨的機會和威脅；在對鄒平鋁業有限公司的實際狀況進行詳細研究的基礎上，找出企業的優勢和劣勢；最後運用swot分析的方法，針對企業目前存在的問題，提出鄒平鋁業公司遠景規劃和實施縱向一體化發展的總體戰略方向，並對戰略的有效實施提出了保障措施。
  7. Therefore, it is an efficient way to dilute cro2 granules for enhancing extrinsic mr, due to the formation of new metal - insulator microstructure, which adjusts natures of barrier. in much of work published, much interest involves the fabricating technique and magnetotransport of cro2 ferromagnet, experimentally

    因此，採用cro _ 2 -絕緣顆粒復合的方法，以形成新的微結構來調整顆粒界面狀態和隧穿勢壘性質，是降低外磁場、增強外稟磁電阻效應的有效手段。
  8. Rapid prototyping technology changed the traditional pattern of product design, which could offer product sample for the designer, reduced design cycle and quicken the schedule of new product design, and it gave the decision - makers visual feeling. ; rp technology provided kinds of molds including resin - boncled mold laminate mold, investment mold and lost foam casting mold and so on for sand casting investment casting and cavityless casting, it could also use direct shell production casting to make pattern dies metal dies die - casting dies injection dies directly, and it could even produce casting products in small scales. the applications of fdm technology in plaster precision casting and the rapid casting technology based on sls technology were introduced, the organic combination between rapid prototyping tecnnology and foundry process, which initiated a new period of rapid manufacturing metal parts, by using advanced new technology alternated traditional foundry industry to make it looked brand - new, thus, the competition of foundry industry would be improved ; rapid prototyping technology offered a rapid economical feasible technical method, common processes of using rapid prototyping technology to produce dies were discussed, in the paper it explored that. the problem of combining rapid prototyping technology with electric arc metal - spraying technology to make metal dies and technics in dies manufacturing of combining rapid prototyping technology with precision casting, rapid tooling based on rapid prototyping, integrated advanced new technology and tradition technology of rapid prototyping manufacture, each superiority were exerted, rapid prototyping technology had been an efficiency measure to rapid update products and develop new product, and to middle -

    快速成型技術改變了傳統的產品開發模式，可以為設計者提供產品樣件，縮短設計周期，加快新產品的開發進度，為決策者提供直觀性；快速成型技術迅速提供砂型鑄造、熔模鑄造、實型鑄造用的各種模樣，包括樹脂模、層壓模、熔模和消失模等，還可採用直接制殼鑄造法直接製造熔模鑄造用的壓型、金屬型、壓鑄型、注塑模，甚至直接製造小批量鑄件，介紹了熔積成型技術在石膏型精密鑄造上的應用和基於選擇性激光燒結技術的快速鑄造技術，快速成型技術與鑄造工藝的有機結合，開創了快速製造金屬零件的新階段，對用高新技術改造傳統的鑄造工業，使其面貌煥然一新，增強鑄造行業的競爭能力；快速成型技術為母模的製造提供了一條快速、經濟、可行的技術途徑，討論了利用快速成型技術製造模具的一般工藝方法，探討了將快速成型技術與金屬電弧噴鍍技術結合起來快速製造金屬模具問題，以及快速成型技術與精密鑄造技術相結合的模具製造工藝，基於快速成型製造的快速模具技術，集成了快速成型製造高新技術和傳統技術，發揮各自優勢，已成為產品快速更新換代和新產品開發及中、小批量生產的有效手段之一。
  9. The studying results show that the advanced spectral estimation is more predominant than dft algorithm and its corrected algorithms in the field of inter - harmonics measuring, especially for the inter - harmonics which is too close to harmonics. hence, it is effective and feasible to introduce the advanced spectral estimation into inter - harmonics measuring

    上述研究證明，在間諧波檢測領域，特別是對離諧波頻率較近的間諧波檢測中，現代譜估計理論有著許多dft演算法及其校正演算法不可比擬的優勢，將其引入電力系統間諧波檢測中是有效可行的。
  10. The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either

    在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。
  11. Besides, scan rate and cycle period also affect the result ; co - deposition of dualistic oxide is a focus of research, as an element in the same group, ir is selected. deposition rate of composition is decreased by the adding of ir composition, and when the proportion of ir exceeded 50 %, composition procession can be ceased. but cooperation of ir and ru oxide can highly increase the specific capacitance of active material ; annealing treatment under a certain temperature can help to change the hydrate ru composition into mixture state ru oxide, accordingly increase the stabilization of active material

    研究表明:電解液的配製過程中，氯化釕濃度、溶液ph值、陳化時間、溶液溫度對電鍍效果均有影響，其中溶液ph值是最主要的影響因素;在儀器的使用條件探索中，理論結合實驗確定了本電鍍液體系循環伏安電勢窗的理想范圍，並發現循環伏安掃描速度和掃描周期對電鍍結果也有較大影響;混合氧化物的共沉澱是目前研究熱點，在此選用與釕同一族的銥作為共沉澱元素，銥的加入會阻礙氧化物的沉積速度，銥的比例超過50 %會使沉積作用停止，但是二元氧化物的協同作用使沉積的活性物質比容量大大提高;一定溫度下退火后處理作用會使水合釕化物轉變成混合價態的氧化釕，從而提高活性物質的穩定性。
  12. Part two : firstly, the thesis analyse circumstance peculiarity of management control system of gdtc. stress combining market competition status and corporate governance and organization environment and several difficulty about how to carry into effect on management control accounting, and put forward my basic issue. it is that control accounting system is a tool of carrying out strategy, and manager must set up competition strategy according to comparative advantage of gdtc and reengineer organization structure for management control accounting system

    第二大部分首先研究分析了廣東電信的管理控制系統的環境制約因素，著重結合廣東電信公司的市場競爭狀況、公司治理結構以及組織環境，從有效發揮管理控制會計的幾個難點入手，提出自己的基本論點，即控制會計系統是實施戰略的工具，著重在比較競爭優勢的基礎上構建競爭戰略，並根據戰略特點分析改造公司內部組織結構，建立有利於管理控制會計系統有效發揮的內部環境。
  13. Company ownes production and examination equipment of various specification. such equipment as light, electricity, magnet and steam is adopted to control system, in order to ensure the qulity of the products ( including products of special request ) and effectively control the rate of inferior goods, as a result, the cost advantage is shared

    公司設有各種規格的生產設備和檢測設備，全部採用光、電、磁、氣… …等設備控制系統，能確保產品（包括特殊要求產品）的品質，有效控制次品率，突顯成本優勢！
  14. First, analyze company " s marketing face the external opportunity and challenge, internal advantage and disadvantage, think although present rural energy market competition becomes intense day by day, but rural uses electrical potential still great, opportunity is more big than challenge. despite company has certain marketing ability, but marketing advantage is not obvious, internal marketing system does not be perfected, lacks effective marketing strategy

    首先，分析了公司營銷工作面臨的外部機遇和挑戰、內部優勢與劣勢，認為雖然目前農村能源市場競爭日趨激烈，但是農村用電潛力依然很大，機遇大於挑戰；盡管公司具備一定的營銷能力，但是營銷優勢不明顯，內部市場營銷體系不完善、缺乏有效的營銷戰略。
  15. On the base of model, considering the disturbance from the other 5 legs and variating load, we design an h - inf controller integrated with ip controller, which makes the system with the advantage of both h - inf control and ip control, and restrains the bad effect from variating disturbance. the simulation shows that this stradgy enhances the system robustness. in another solution, the coupling and load disturbances are regarded as the parameter variations of motor model, and the variation is observed, thus, the coupled dynamics of vamt is decoupled to 6 single motor systems

    在建立了模型的基礎上，本文針對單滑塊控制系統要受到其它滑塊及負載擾動的影響，採用h _控制方法設計的h _控制器與傳統ip位置控制器結合，使得系統具有ip位置控制器和h _控制的雙重優勢，有效地抑制了變化擾動對位置輸出的影響，模擬結果表明該方法大大提高了系統的魯棒性；本文提出的另一種方案是將桿間的耦合作用和負載擾動看作電機參數變化，利用觀測器進行觀測，從而將耦合的機床動力學系統解耦成為6個獨立的電機動力學系統。
  16. Then we set up the model of rectangle - shape pipeline. we compare it to circuit - shape pipeline on sides of the value of induced electromotive force, pressure loss when liquid flow trough the pipeline and resistance ' s value of the sensor. we get the result that we can finish the measurement of low - velocity flow by using the rectangle - shape pipeline

    接著對矩形測量導管進行建模，並在流體流經矩形測量導管時產生感應電動勢的大小、流體在測量導管中的壓力損失和傳感器內阻的大小對輸出信號的影響等幾個方面與圓形測量導管進行比較后得出採用矩形測量導管完全能夠有效地完成微流量的測量。
  17. In this article, introduce the important meanings of a - b effect, first is a have physics factors, second is wave function phase factor is connected with geometrical factor in ( b = 0, a 0 ), through a - b effect, we know : electromagnetic field vector e, b is local quantity, electromagnetic potential a, is global quantity, adding a, description and by the way of loop integral, electromagnetic field " effect is completely descripted

    本文介紹了有重要歷史意義的a - b效應， a - b效應揭示了兩點物理觀念的變革：一是電磁矢勢有物理效應。二是在無場強但有磁矢勢（ b = 0 ， a 0 ）的區域，波函數的相位因子與其運動空間結構有關。 a - b效應顯示； e 、 b是局域量， a 、是總體量，只有加入a 、之後的描述，並通過a的環路積分，才能對電磁場的作用做出完全準確的描述。
  18. Enterprise operator in the reform, it is no doubt a kind of method to try to find out the problem of solving in practice, but if there are scientific theories as guide, if can use the management theory of advanced science and telecommunications reform practice and combine together, then, the telecommunications of our country reform the cause and can step into a new realm certainly. this thesis is case study with the new chinese network communication group company standing on the new starting point in feature, at complicated market environment and living environment so, how about find out a feasible experience of management, and then form the management standard of the new developing telecommunications enterprise and effectual management strategy

    本文首先概括了選題的背景和意義，闡述了論文研究所需要的經營戰略和競爭戰略理論、組織行為理論及市場營銷理論；分析了中國電信業面臨的競爭環境和經營狀況；找出中國網通在電信市場上的優勢和劣勢，進而從中國網通的市場定位，經營策略的角度出發，分析研究了以新面貌站在新起點上的中國網路通信集團公司，面對的如此復雜的市場環境和生存環境，如何摸索出一條切實可行的管理經驗，進而形成新興電信企業的管理規范和行之有效的經營戰略。
  19. Implementing the plan of having one college student in every village is a chance for radio & tv university to construct the new country

    摘要實施「一村一名大學生計劃』 ，是廣播電視大學服務新農村建設的有效路徑和發揮自身優勢的新機遇及新的發展增長點。
  20. Studying on financial computerization risks and its supervision helps to implement effective supervision and speed up the development of financial industry in our country

    研究金融電子化風險及其監管問題，目的在於為我國新形勢下實施有效監管、促進金融電子化和金融業良性發展提供重要的參考指導。
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