越前電流 的英文怎麼說

中文拼音 [yuèqiándiànliú]
越前電流 英文
leading current
  • 越 : Ⅰ動詞1 （跨過; 跳過） get over; jump over 2 （超出） exceed; overstep 3 （昂揚） （of one s voice...
  • 前 : Ⅰ名詞1 （在正面的） front 2 （次序在先的） first; top 3 （過去的; 較早的） ago; before; preceding...
  • 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...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 越前 : echizen province
  • 電流 : current; galvanic current; electric current; electricity; current flow電流保護裝置 current protec...
  1. Mems ( micro electromechanical system ) has become one of the most rapidly development technologies. along with the rapid development of mems techniques, capacitive sensor is used widely whose capacitance changes small, which has put forward the new request to the measurement technique. the common measure for capacitance measurement is that convert capacitance to voltage, electric current or frequency. the area of polar plate of the capacitor becomes smaller and smaller, and the total capacitance of micro capacitive sensor is usually several pico farad only. as a result, its change amount is smaller

    Mems （ microelectromechanicalsystem ）近年來發展最快的技術之一，隨著mems技術的快速發展，電容式加速度計的電容變化變化量越來越小，對檢測技術提出了新的要求。在電容式傳感器中，常用電容檢測電路是將其轉換為電壓、電流或者頻率信號。目前的微型電容傳感器的極板面積變得越來越小，電容總量只有幾個pf ，變化量就更小。
  2. Recently, in the field of microfluidics system the drive mode of flow is a key problem, dc electroosmoticflow micropump bases on the principle of electroosmosis, which control the flow in the microchannel with electric field. recent years, it is more and more attracting people to realize it

    當前在微流控系統中液體的驅動方式是一個關鍵問題，直流電滲流微泵是基於電滲原理，利用電場控制通道中的液體流動，實現無運動部件的液體流動系統，近年越來越受到人們的重視。
  3. The stator of aceg is connected to the grid and the three symmetrical excitation windings in the rotor are fed by converter. the magnitude and frequency and phase and phase sequence of excitation voltage can be controlled, so the magnitude and position of excitation mmf as well as the speed of rotor can be controlled. therefore, acegs have superior performances by contrast with conventional synchronous generators and induction generators, such as upstanding stability, power generation of variable speed constant frequency ( vscf ), adjusting active power and reactive power independently, and absorbing lag reactive power deeply

    交流勵磁發電機的基本結構與繞線式異步電機相同，其定子側接電網，轉子上採用三相對稱分佈的勵磁繞組，由變頻器提供對稱交流電勵磁，且勵磁電壓的幅值大小、頻率、相位、相序都可根據要求加以控制，從而可以控制發電機勵磁磁場大小、相對于轉子的位置和電機的轉速，使得交流勵磁發電機具有良好的穩定性及轉速適應能力、獨立的有功與無功調節能力和較強的進相運行能力，性能超越傳統同步發電機和感應發電機，因而有著廣闊的應用前景。
  4. Since high tc superconducting ( hts ) tapes for practical applications became commercially available over the past few years, the development of superconducting power technology has achieved significant progress. it is foreseen that superconducting technology will be the prevailing high technology of the 21st century, and that superconducting power equipment will be commercialized soon, enjoying a large - scale worldwide market before 2010. china ' s economy is expanding fast, and the demand for electricity is increasing quickly. at the same time, higher electricity quality will be required. traditional power technology will no longer be able to satisfy future requirements, so superconducting power technology would be the best solution, leading a revolution in the power industry. the history, present status and prospects of superconducting power technology as well as the economic benefits and basic physics problems involved are reviewed

    人們認為，超導體在電力方面出現大規模應用的時間距離我們還非常遙遠.然而，隨著最近幾年來實用高溫超導材料的研製取得重大的進展，高溫超導電力技術的應用已經成為現實，預期將在2010年左右出現大規模的應用，並將帶來電力工業的革命.因此，下一個10年將是國際超導技術競爭最關鍵的10年.我國的經濟發展很快，電能需求量增加十分迅速，對電能質量的要求也越來越高.常規電力技術已經無法滿足我國電力發展的需要，超導電力技術是實現我國電力發展目標的必由之路.文章有代表性地介紹了超導電纜、超導限流器、超導磁儲能系統、超導變壓器和超導旋轉電機等的基本工作原理及研究發展歷史，並著重介紹高溫超導電力應用研究的現狀、應用前景、經濟可行性及基本物理問題
  5. At present, large traffic of long - distance calls is being replaced by ip telephony in the wireline network and that of local calls by mobile phone calls. therefore, wireline operators are eagerly seeking a way to increase service revenue, reduce cost and expand their market

    當前，固定網路的大量長途電話業務被ip分流，而本地電話業務被移動分流，因此固定網路運營商亟待尋求一種增加業務收入、降低成本和拓展市場空間的發展之路，希望能夠超越傳統業務，開發出新的業務空間。
  6. With internet growing more and more fast and getting widely used, packetization based on ip has become the main trend of the evolution of telecommunication networks, and voip technology is being developed very rapidly

    網際網路速度越來越快，覆蓋范圍越來越廣，以ip為核心的分組化已成為電信網路演進的主流方向， voip技術正在經歷前所未有的迅速發展。
  7. At present, the key technology of edm power supply is how to design a power supply with simple circuit, finish maching, high heat availability, high efficiency and wasting less energy, so a current source lcc resonant converter is selected for the edm power supply in this paper, the prototype of current source and load adaptability are used to get the performance of simple circuit, finish maching, high efficiency and wasting less energy. at first, the status quo of edm power supply is introduced in this paper, the design of an edm power supply is comfirmed after the characteristics of current edm power sypply has been summarized. secondly, the principles of the lcc resonant converter are analyzed in detail

    本文首先介紹了edm電源的研究現狀，在總結當前edm電源特點的基礎上，確定了採用電流型lcc串並聯諧振變換器作為主電路拓撲的設計方案，其次，對拓撲進行了詳細的原理分析，由於電流型lcc串並聯諧振變換器眾多參數是相互影響的，在對edm電源系統進行分析與模擬基礎上，對參數設計進行了優化設計，再次，對拓撲及edm電源進行了建模與模擬分析，確保了該edm電源設計的可行性，最後研製了輸出峰值電流為20a的電流型edm電源樣機，並通過對原理樣機的實驗，驗證了參數優化設計的正確性及電流型lcc串並聯諧振變換器的edm電源的優越性。
  8. With the serious problem of harmonics pollution to the power system, as well as the need of high performance of ac drive application, three - phase pwm rectifiers have been as active research topic in power electronics recently, due to the virtues, such as sinusoidal input currents, unity power factor, steady output voltage, good dynamics and bin - directional energy flow

    隨著電網諧波污染問題日益嚴重和人們對高性能電力傳動技術的需要， pwm整流技術引起人們越來越多的注意。三相pwm整流器可以做到輸入電流正弦、單位功率因數、直流電壓輸出穩定，具有良好的動態性能並可實現能量的雙向流動。因此， pwm整流器成為當前電力電子領域研究的熱點課題之一。
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