電荷速度 的英文怎麼說

中文拼音 [diànhésùdù]
電荷速度 英文
charge velocity
  • 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...
  • 荷 : 荷名詞（蓮） lotus
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. Abstract : experiments were made on a ultrasonic machining tool with work - piece adhered to ultrasonic transducer head, to machine micro - holes on hard and brittle materials such as soda glass and si, to study the effects of tool materials ， work - piece materials ， amplitude ， machining load ， slurry concentration ， tool length and the size of work - piece on machining rate and wear ratio. in this experiment, the micro - tool was made through wedg

    文摘:通過以wedg放電加工手段製作微細超聲加工用工具，在採用工件加振方式的微細超聲加工機上對碳酸玻璃、半導體硅等硬脆材料試件進行微孔加工的實驗，來探討在某一特定加工條件下工具材料、工件材料、工件的振幅、加工靜載荷、磨料懸浮液濃度、工具長度及工件尺寸等重要因素對加工速度、工具損耗率的影響，為微細超聲加工技術的實用化提供參考依據。
  2. By picking up actual load on road of car body, use the electro - hydraulic servo road simulating system and the remote parameter cantrol system to iterate, take the iterating control target as an accelerated speed signal of spindle nose, iterate separately the loading spectrums on different road surfaces and finally merge the iterated results to obtain the loading spectrums for tests in the test bench

    通過對轎車車身實際道路載荷的採集，採用電液伺服道路模擬系統和遠程參數控制系統進行迭代（迭代控制目標為軸頭加速度信號，對不同路面的載荷譜分別進行迭代，最後將迭代的結果合併） ，得到用於臺架試驗的加載譜。
  3. Accelerometer is used widely for measuring acceleration in civil and military field. at present, there are several type of accelerometers such as piezoelectricity electric charge accelerometer, ic piezoelectricity electric accelerometer, compressive resistance accelerometer and alteration capacitance accelerometer. the main part in alteration capacitance accelerometer is capacitance measurement circuit. foreign countries have produced accelerometer that have tiny volume and high performance. however, our country is not able to produce such accelerometer due to the lack of technique

    加速度計作為一種測量加速度的儀器，在民用、軍用領域都有廣泛的應用。目前市場上的加速度計主要有壓電式電荷加速度計、集成電路式壓電加速度計、壓阻式加速度計、變電容式加速度計等幾種類型的加速度計。變電容式加速度計的設計中一個重要的環節就是電容檢測電路的設計。
  4. Based on sndm technique, a method of local capacitance - voltage characteristic characterization of ferroelectric thin films was proposed. the effect of traps at oxide - semiconductor interface on metal - oxide - semiconductor structure capacitance - voltage curve was discussed, and the influence of coercive field to the capacitance - voltage characteristics of ferroelectric thin films was also discussed. the dynamic switching of ferroelectric domain in ca doping ( pb, la ) tio3 thin film was studied by sndm from the view of electricity

    利用sndm ，從純電學的角度觀察了plct薄膜中的電疇動態反轉過程，由電疇橫向擴張的移動速度的降低，發現了晶界在電疇反轉過程中對疇壁移動的阻擋作用;根據sndm和pfm的在垂直方向上的不同信息敏感深度，得到plct薄膜中電疇反轉過程中電疇是楔形疇;用pfm觀察同一電疇在去掉外加反轉電場后電疇的極化弛豫現象，結果表明空間電荷是發生極化弛豫的主要原因。
  5. The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,

    基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。
  6. On the basic theory of transfer heat, tribology of rolling bearings and rotor dynamics, taking gdz48a electrospindle as an example, the paper puts forward the spindle bearing ' s quasi - dynamics analysis model with the influences of the friction heat and preloadings analyzes the friction moment, velocities, contact loads, friction heat and stiffness and studies the influences of the friction heat, structure and application parameters on the speed and dynamics

    本文以傳熱學、滾動軸承摩擦學和轉子動力學為理論基礎，以gdz48a型電主軸為例，建立了考慮摩擦熱和預緊方式影響的主軸軸承擬動力學分析模型，分析了軸承的摩擦力矩、運動、載荷和剛度，研究了軸承的熱特性、設計和應用參數對速度和動力學性能的影響，並進行了試驗驗證。
  7. The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed

    本文對空芯動圈式直線同步電動機進行了深入細致的研究，內容包括： （ 1 ）採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式（集中電流法、分佈電流法） ，同時介紹了兩種永磁電機氣隙磁場計算方法（磁荷法，直接求解拉氏方程法） ，分析各種方法的優缺點，討論電機參數對氣隙磁密的影響； （ 2 ）介紹了單層同心繞組的布置方式，根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式，分析靜態力?位移特性； （ 3 ）建立空芯動圈式直線永磁同步電動機動態模擬模型，模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。
  8. Until about ten years ago, we believed that the only properties we can tell about a black hole are its mass, angular momentum loosely speaking its spinning rate and its electric charge. two black holes that have the same mass, angular momentum and charge will behave in exactly the same way. in particular, it does not depend on what kinds of material it forms from

    原理：十年之前，我們相信黑洞是一個很簡單的物體，三個物理參數質量角動量如要求不嚴謹，可把它看成為自轉速度和電荷便決定了它的一切，兩個黑洞只要它們這三個參數相同，物理特性便完全一樣，黑洞最初由甚麼物質所造成是無關宏旨的，由於黑洞是這樣單純，光禿禿沒有甚麼特徵，所以天文學家謔稱黑洞沒有毛發。
  9. On the base of widely investigating and researching, author deems that the conventional reactive power compensation devices used by consumer had many defects with among others : lower response time, remaining residual voltage on the compensation capacitors, and so on. because of existing improper trigging time, it is impossible to realizing balance compensation for 3 - phrase unbalance loads

    本文在充分調研的基礎上，認為目前採用的傳統的無功功率補償裝置存在響應速度慢、觸發時刻不合適、補償電容器上有殘壓、不能實行三相平衡補償、對電網產生污染、不能消除負荷本身產生的高次諧波等弊病。
  10. In the cylinder2 - 1 / 2d code, object - oriented methodology is employed to increase flexibility and extensibility, a charge conserving current weighting algorithm and a multi - time - scale algorithm is used to enhance computational efficiency

    程序演算法中採用了滿足電流電荷連續性方程的電流分配方法和多時標推動粒子方法等，有效地提高了程序的計算速度。
  11. This paper introduce the features of a kind of electric heating atmospheric boiler which is of high efficiency on energy transferring, non - pollution, starting and stopping quickly, wider range of load adjusting, simple body structure, etc. in addition the paper introduce the design idea briefly

    電加熱鍋爐具有能量轉化效率高、零污染、起停速度快、負荷調節范圍大、本體結構簡單等特點，文章具體介紹了一種常壓熱水電鍋爐的設計。
  12. The distributions of velocity vector, vorticity. turbulent kinetic energy and some other detailed flow information in the field are obtained. the influence of electric field on the flow field is discussed and gives a deep insight on it

    3 、首次採用piv技術對荷電噴霧射流流場進行了測量，獲得了整個流場的瞬時速度、湍能、渦量等信息分布圖，研究了流場特性隨充電電壓的變化情況。
  13. It includes : solving " excess attempt " and " defective attempt " of agc by load prediction in extraordinary shot time, that is preceding control technique ; ( 2 ) enhancing the regulating capacity and speed of agc of chongqing network by 5 measure ; analyzing the policymaking that chongqing network could achieve criterion now or after three gorges power station running, discussing the managing measure how to enhance regulating capability of agc of chongqing network

    其中包括：利用超短期負荷預報解決agc 「過調」和「欠調」問題的超前控制技術；以5種實現方式提高重慶電網agc可調量和調節速度；探討了當前和在三峽電站投運后重慶電網達到考核標準的對策，討論了從管理上提高重慶電網agc調節性能的辦法和措施。
  14. Speed of charge and distribution of displacement current

    電荷的運動速度與位移電流的分佈
  15. The artificial neural net ( ann ) way is universal regard as one of the most effective ways of stlf. in this paper, some research is developed for stlf using ann ways in several parts : the first part is about the arithmetic of ann based on bp model, namely the advanced of traditional bp arithmetic, one alterable step and scale bp arithmetic based on comparability of model and probability of accepting bp arithmetic is used to enhances a lot the convergence rate of learning process of bp network, but also avoid the stagnation problem to some extent. it indicates that the ann ' s efficiency and precision by the way can be ameliorated by the simulation of real data

    神經網路方法在短期預測中已經被公認為較有效的方法，本文針對神經網路用於電力系統短期負荷預測的幾個方面展開研究工作：第一部分研究一般用於負荷預測的神經網路bp模型的演算法，即對傳統的bp演算法的改進，將一種基於模式逼近度和接受概率的變步長快速bp演算法應用到短期負荷預測，模擬結果表明該方法有效的改善了bp演算法收斂速度慢以及容易陷入局部最小點的缺點，從而提高了神經網路用於負荷預測的效率和精度。
  16. For example, one of us ( umstadter ) has demonstrated electron beams of a few million electron - volts whose “ brightness ” ( in essence, the concentration of particles in the beam ) exceeds that of beams made by conventional accelerators, mainly because the charges bunched in one pulse of the beam have less time to blow it apart by its own electrostatic forces

    例如烏姆斯塔特（本文作者之一）便曾展示過，具有數百萬電子伏特的電子線束之亮度（基本上，即是線束內的粒子濃度）超過了傳統加速器產生的線束，因為脈沖內束在一起的電荷根本沒時間以自身的靜電把別人擠開。
  17. Solar wind refers to this released energy in the form of charged particles at high speed, reaching several hundred kilometres per second

    其中部份能量以帶電荷粒子形式高速傳送開去，這便是太陽風。它的移動速度達到每秒數百公里。
  18. Based on the discussions of the conventional and recent methods of short term load forecasting such as time series, multiple regression approaches and artificial intelligence technologies, this paper presents a hybrid short term forecasting model which combines the artificial neural network ( ann ) and genetic algorithm ( ga ). in order to improve the convergence speed and precision of the back - propagation ( bp ), a new improved algorithm - the adapted learning algorithm based on quasi - newton method is given

    本文首先分析比較了電力系統短期負荷預測的傳統方法時間序列法和回歸方法以及最近的專家系統和神經網路技術的優點和不足，然後針對人工神經網路bp演算法的不足對其進行了改進，採用了基於擬牛頓的自適應演算法，它提高了網路學習效率，具有較快的收斂速度和較高的精度。接著提出了改進的遺傳演算法來改善神經網路的局部收斂性。
  19. They are voltage scaling, current scaling and charge scaling. by compare, current scaling dac is the most fast and occupies the least area. the current - steering structure is a type of improved current scaling structure

    傳統dac的轉換按其縮放方式進行分類，主要有:電流按比例縮放、電壓按比例縮放和電荷按比例縮放，通過比較可知，電流按比例縮放轉換速度快且佔用晶元面積小。
  20. Abstract : in the paper a kind of new idea based on electric field theory is advanced, which is used in research of forming law of electrochmeical perforation with fixed cathode. according to it, the changing law of electric intensity, current density, velocity of perforation in ecm on the machined surface are presented

    文摘:根據電場理論，提出了一種研究固定陰極電化學射孔成形規律的新的處理方法，分析了該加工方式下陰極表面電荷密度及加工區的電場強度、電流密度、加工速度等在加工過程中的變化規律，為這種簡易加工方式的合理應用提供了嚴密的理論依據。
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