整流電導率 的英文怎麼說

中文拼音 [zhěngliúdiàndǎolǜ]
整流電導率 英文
conductance for rectification
  • 整 : Ⅰ形容詞1 （全部在內; 完整） whole; all; complete 2 （整齊） neat; tidy; orderly Ⅱ動詞1 （整理; 整...
  • 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...
  • 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...
  • 導 : 動詞1. （引導） lead; guide 2. （傳導） transmit; conduct 3. （開導） instruct; teach; give guidance to
  • 率 : 率名詞（比值） rate; ratio; proportion
  1. The high - power semiconductor quantum well ( qw ) laser is a kind of luminescence device with superior performance, it has longe - lived, low threshold current density, high efficiency, high luminosity and excellent monochromatic, coherence, directionality, etc. the high - power semiconductor laser is widely applied to the fields, such as military, industrial machining, communication, information processing, medical treatment, etc. the material ' s epitaxy is the foundation of the whole laser ' s fabricating, and it has important influence on the optics and electricity performance about the laser

    大功率半導體量子阱激光器是一種性能優越的發光器件，具有壽命長、閾值電流密度低、效率高、亮度高以及良好的單色性、相干性、方向性等特點，廣泛應用於軍事、工業加工、通信及信息處理、醫療保健等領域。材料的外延生長是整個激光器器件製作的基礎，對器件的光學和電學性能有著重要的影響，生長不出優質的材料體系，獲得高性能的器件就無從談起，因此，材料的外延生長便成為了整個半導體激光器製作過程之中的重中之重。
  2. Comparing to gearless traction machines, kaide series enjoy 40 % less starting current, 12 % more efficiency and physical size installation, which offer lower cost of the overall elevator configurations, such as reduced number of pilot wheels and steel ropes, and associated installation cost and trouble

    相較無齒輪曳引機，啟動電流降低40 % ，效率提高12 % ，又可1 ： 1安裝，降低了整梯的配置成本（減少導向輪、鋼絲繩的數量） ，節省了安裝費用及相應麻煩。
  3. Synthetic cryolites is mainly used as the flux in the aluminium electrolysing and the fillers of rubber, grinding wheel, the milk whiter agent of enamel glass - shaded and the flux of the non - iron metal, etc. its merits are adjustable molecular ratio, lower cost and good fluidity

    人造冰晶石可作電解氧化鋁的助熔劑，橡膠，砂輪的填充劑，搪瓷玻璃罩的增白劑及非鐵金屬的助溶劑等，它具有可調整的克分子傳導率，成本低，流動性好等優點
  4. The conventional switching power supply usually use a diode rectifier followed by a bulk capacitor to convert ac voltage to dc voltage, resulting in the pulsating waveform of the input ac line current, low power factor ( generally 0. 65 ) and high harmonic line current

    傳統的開關電源設備通常採用二極體橋來進行整流和一個較大的電解電容來進行濾波以實現輸入電壓的交直流轉換，導致輸入電流為一個很窄的脈沖波並含有較多的諧波分量，功率因數變低（通常只有0 . 65 ） 。
  5. Static power convertors ; semiconductor rectifier equipment for trickle charging of lead - acid batteries

    靜態功率變流器.鉛酸蓄電池滴流充電用半導體整流器設
  6. The control tactics of space voltage vector are investigated, and the simplified algorithm which judges the sector location of reference vector and calculates switch operation time is put forward. by analyzing the current hysteresis control, the relation between switch frequency, and hysteresis bandwidth and input inductance of pwm rectifier is deduced. by applying instantaneous power theory, the principle of pwm rectifier power control is analyzed, and the direct power control by matlab toolbox through estimating active power and reactive power with virtual flux is realized, and the simulation results prove that it is correct

    對常用空間電壓矢量控制策略進行分析，提出了給定參考矢量所在區間判斷的簡化方法，以及電壓矢量作用時間的求取方法；分析了電流滯環控制策略，推導出開關頻率與滯環帶寬以及整流器輸入電感之間的關系；應用瞬時功率理論分析pwm整流器功率控制原理，通過虛擬磁鏈估計有功功率和無功功率，用matlab實現了直接功率控制，並驗證了該控制方法的正確性。
  7. Static power convertors ; semiconductor rectifier equipment, examples of characteristic curves for battery chargers

    靜態功率轉換器.半導體整流設備.蓄電池充電器特性曲
  8. In the light of present hotel e - commerce construction status and the macro - environment of china, chapter five proposes a stage - by - stage hotel e - commerce development strategy, after the comparison of the three entry approaches to the hotel e - commerce, it points out that hotels of china should make use of the good opportunity of the national golden tour project, join the tour hotel net positively and build up their own e - commerce. this will not only improve the inside flow and management of hotels, improve the service quality and working efficiency, but also can realize a global marketing and online reservation through the destination marketing system. it will enhance the whole competition level of the chinese hotel industry

    第一章導論介紹了本文的研究意義、研究視角和方法；第二章介紹了本文所研究的飯店電子商務的概念與內涵，並對國內外飯店電子商務的發展現狀進行了對比，對制約我國飯店電子商務發展的原因進行了總結；第三章從經濟學的角度，對電子商務的應用價值進行了理論上的提煉；第四章開始將電子商務引入飯店，首先分析了電子商務在飯店企業中的適用性，然後介紹了飯店中電子商務的技術構建，再從管理學角度對飯店應用電子商務所帶來的商業模式變革及其價值進行了詳細闡述；第五章針對目前我國飯店電子商務的建設現狀和宏觀環境，提出了分階段發展飯內容提要店電子商務的戰略，並對三種飯店電子商務介入途徑進行了對比，指出應該借國家金旅工程建設的良好契機，積極加入旅遊飯店網，藉助現有的電子商務平臺，建設飯店電子商務，不但可以改善飯店企業內部流程與經營管理，提高服務質量與工作效率，還可以通過目的地營銷系統，實現全球營銷與在線預訂，增強中國飯店業的整體競爭水平。
  9. With the conduction property of the triggered thyristor and the intellective numerical controlled frequency reduction of the triggering pulse by mpu, we can divide alternating current into several complete sinusoidal waves to supply some loads. it can be made as a controller or a pcb ware, which is suitable for the air conditioning, machine tool and various instruments that require electric power or rotate speed adjustment

    利用晶閘管的觸發導通特性，用單片機對觸發信號進行智能數字降頻，可在交流電中切分出部分完整的正弦波形供負載使用，可以單獨做成一臺控制儀器或者作為一個控制電路板用於需要電功率和轉速調節的空調、機床以及各類儀器設備中。
  10. Organic - inorganic nanocomposite, which are the complex of inorganic nanopraticles with organic compound, is a popular study subject in nanoscale composite. the nanocomposite can not only take advantage of several advantage, but also produce new properties. in this thesis, taking account of the problems in electrorheological fluids such as high leakage current, low yield stress and stability, the pan - batio3 nanocomposite with different structure are prepared by in - situ complex technology and modified sol - gel method

    根據目前電流變液中出現的問題（如屈服應力不夠高，漏電流密度不夠低，穩定性不夠好等問題） ，基於聚苯胺有較高的熱穩定性，且密度又小，特別是聚苯胺的介電常數和電導率均可按需調整，此外，鈦酸鋇無機納米粒子作為一種無機鐵電體，在電場作用下具有自發極化的能力，一方面可以為體系提供高的介電常數，另一方面又可保證體系的絕緣性能。
  11. Since the company began to resrerch and make radiators in 80 ' s last century, domestically advanced production lines have been adopted in the production. we sim at 100 % conformity of heat impedance performance curve with the testing standards stipulated in st2564 - 85 standard book of " profiled material raditors " which is promulgated by ministry of electronic industry of people republec of china. the radiators are matching heat - radiating components for power semiconductors, generally can be applied to fields of large and small power appliances, hi heat current density utensils, whole - set apparatus, electuonics and electrical devices, etc

    本公司自八十年代初研製生產散熱器系列產品以來，採用國內最先進的生產流水線，工藝精湛，其熱阻特性曲線均按中華人民共和國電子工業部標準st2564 - 85 《型材散熱器》規定的檢測方法，百分之百達到設計要求，是功率半導體器件的配套散熱元件，運用於多種大、小功率電器熱流高密度、整機設備、電子，電器等領域。
  12. When the conduction angles are controued at 135 ~ 140, power factors of the rectifying transformer can be controlled in the rage of 0. 91 ~ 0. 94

    根據系統電壓的變化及時調整整流變壓器的檔位，當控制導通角135 ~ 140時，可以將整流變壓器的功率因數控制在0 . 91 ~ 0 . 94 。
  13. Compare to the operation under the dcm mode, the power switches of the inverter under the ccm mode has lower peak current and rms current, so the efficiency can be improved. as the synchronous rectification strategy can reduce the conduction losses of the rectifier, and also due to the zvs realization of all synchronous rectifiers, the

    採用非互補導通控制，在ccm模式下由於功率管電流峰值和有效值的減小，逆變器變換效率較dcm模式下有所提高;另外， ccm模式下，反激逆變器採用同步整流控制，減小了整流二極體的導通壓降，並且電路中同步整流管可實現零電壓開通。
  14. 3. a good result is gotten under the star - hspice simulation. the dc gain is 90 db, the offset voltage is 40 u v while driving 10k, the unity - gain frequency is 10mhz with phase margin 67, the slew rate is 10w us while driving 10pf

    用star - hspice模擬軟體對電路模擬，在1 . 5v電源電壓、直流10k負載、交流10pf負載的情況下，整個共模電壓范圍內跨導基本保持恆定，只有18的變化，直流增益90db ，單位增益帶寬10mhz ，相位裕度80度，壓擺率10v s 。
  15. Based on the current - rising - rate protection and current increment protection, the principle of ddl protection as well as its action equation is presented

    以電流上升率保護和電流增量保護為基礎，提出了一種新型的ddl保護方法及整定原則，並推導出了完整的動作方程。
  16. A new type high efficiency synchronous step - up dc / dc converter for hand - held device is designed in this thesis. it works in the pfm ( pulse frequency modulating ) mode, and its switching frequency can up to 500 khz. it offers a built - in synchronous rectifier that reduces size and cost by eliminating the need for an external schottky diode and improves overall efficiency by minimizing losses

    本文設計了一種用於移動電子設備的高效同步整流的dc / dc升壓晶元，該晶元採用pfm （脈沖周期調制）調制方式，工作頻率最高可達500khz ，內部集成功率管作為同步整流管，代替傳統的肖特基二極體，導通電阻僅有0 . 4
  17. Static power convertors ; semiconductor rectifier equipment, examples of characteristic curves for equipment operating in parallel with batteries

    靜態功率轉換器.半導體整流設備.與蓄電池並聯運行的
  18. Taking the hvdc systems as a variable admittance connected at the inverter or rectifier ac bus, the analytical description of the relationship between the variable admittance and active power flows of each generator can be derived. the traditional generator dynamic equations can thus be expressed with the variable admittance of hvdc systems as an additional state variable and changed to an affine form, which is suitable for the global linearization method being used to determine its control variables

    該方法基於微分幾何理論，將直流輸電系統等效為兩個分別連接在整流側和逆變側的變導納支路；在推導出直流輸電系統的等效變導納與各發電機輸出電磁功率間的解析關系后，傳統的發電機動態方程可被表示成仿射非線性的形式，因而可應用全局線性化方法來求得直流輸電系統的調制量。
  19. Skin effect is the tendency for alternating current to flow near the sruface of the conductor in lieu of flowing in a manner as to utilize the entire cross - sectional area of the conductor. this phenomenon causes the resistance of the conductor to increase. the magnetic field associated with the current in the conductor causes eddy currents near the center of the conductor which opposes the flow of the main current near the center of the conductor. the main current flow is forced further to the surface as the frequency of the alternating current increase

    表面疚是指交流電流較傾向于導體的表面傳導而非流經整個導體截面的趨勢，這些現象會造成導體的電阻提高，與導體中的電流有關的磁場在導體中心部位產生過電流而阻礙了中心部位的主要電流，當交流電的頻率增加時，主要電流的流向會進一步被推擠到導體表面。
  20. Through launching co - distribution planning system to enhance the information quality and the efficiency of transference is the way to make the decision scientific. it is national to say that logistics information reading technologies and transition models for the enhancing logistics efficiency traditional business process and construction of inter - companies and inter - departments also have to be tailored. the re - engineering of logistics business and the policies of ordering, inventory, distribution and the third party logistics are studied intensively

    要實現現代物流的效率還必須根據電子商務的特點對傳統的企業內部及企業間業務流程、結構、策略進行適當調整以實現業務流程在整體上的優化，在業務策略分析中重點研究了物流業務重組、采購策略、庫存策略和配送策略以及第三方物流策略，導入業務流程重組策略、共同配送計劃、供應商管理客戶庫存策略、準時化的訂單采購等策略。
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