逆流定理 的英文怎麼說

中文拼音 [nìliúdìnglǐ]
逆流定理 英文
reverse-flow theorem
  • 逆 : Ⅰ形容詞1 （方向相反） contrary; counter 2 [數學] inverse; converse Ⅱ動詞1 （抵觸; 不順從） go aga...
  • 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...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 理 : Ⅰ名詞1 （物質組織的條紋） texture; grain （in wood skin etc ） 2 （道理;事理） reason; logic; tru...
  • 逆流 : anarrhea; backset; backwash; contra flow; counter flow; eddy; receding; counter current; reverse ...
  1. Through the research on the development character of overthrust fault, we analyzed its sealing mechanism. we also established evaluation standard and method of fault sealing ability through the following two simulation experiment : experiment on the quantitative relationship between property of fracture zone filler and fault sealing ability ; experiment on the deformation character of cream shale. based on these work, we evaluated sealing ability of overthrust faults on several typical structure in kuche depression

    本文通過逆掩斷層發育特徵研究，分析了逆掩斷層封閉機理，在斷裂帶填充物性質與斷層封閉性定量關系模擬實驗和膏泥巖變形特徵模擬實驗基礎上建立了斷層封閉性評價標準及評價方法，以此對庫車坳陷幾個典型構造上逆掩斷層垂向封閉性進行了評價，結果表明現今斷層多是封閉的，這是庫車塌陷天然氣和異常孔隙流體壓力得以保存的主要條件。
  2. In this article, physical equations and relative three - dimensional finite - difference formulae in cylindrical and spherical geometries were derived and two - and three - dimensional code in cylindrical and spherical geometries for direct - drive by laser was made, based on the lared - s code in planar geometry. it consisted of the processes such as the inverse bremsstrahlung absorption, electic heat conduction and fluid dynamics

    本論文在lared - s程序平面版本基礎上，推導了三維柱和球幾何中激光驅動的物理方程和相應的差分方程，編制了二維和三維柱和球幾何中激光驅動流體不穩定性的lared - s程序版本，主要物理過程包括：激光逆軔致吸收、電子熱傳導和流體運動。
  3. Firstly. operation principle of induction heating is introduced and the actuality of the power supply for induction heating is summarized. then, the scheme of structure of the power supply is established : uncontrolled rectifier and buck chopper constitute dc circuit. in this part, operation principle of a kind of soft switching buck chopper is presented mainly and the conclusion that the power semiconductor devices operate in soft switching is also illustrated by analysing the operation principle of all stages ; series resonant inverter is selected as inverter circuit via comparing the advantage and shortcoming of parallel resonant and series resonant. moreover. the work principle of series resonant inverter is analysed and the calculating method of the best dead time is put forward as well

    文中首先介紹了感應加熱電源的工作原理並綜述了國內外的研究現狀。接下來分析並制定了電源主電路的構成方案：在對比幾種功率調節方式的基礎上選擇了不控整流加斬波調壓作為直流部分。在這部分里，重點研究了一種軟開關buck變換器，通過分析各階段的工作原理說明了開關器件如何工作在軟開關狀態；對于逆變器部分，在比較了串、並聯逆變器優缺點的基礎上選擇了串聯諧振逆變器，並詳細分析了串聯逆變器的工作原理，提出了最佳死區的計算方法。
  4. Firstly, we generalize and analyze the advantages and present research of elliptic curve cryptography ; secondly, we study the basic theory of the ecc ; thirdly, we illustrate the safety of the ecc and discuss the elliptic curve key agreement scheme, elliptic curve encryption scheme and elliptic curve digital signature algorithm ; fourthly, we study fast algorithms of the multiplication and inversion multiplication of the element of in the underlying finite field f2m whose characteristic is two represented by the two basis of optimal normal basis and polynomial basis. we make improvements to the fast algorithm of the polynomial basis multiplication by hankerson and base on the experiments, we describe the properties and compare the advantages of the multiplication and inversion multiplication of the elements in f2m field under optimal normal bases and polynomial basis. results concluding from the study car be used as references in the realization of the elliptic curve cryptosystem ; fifthly, we overview the current fast algorithm of point multiplication, improve the fix base point comb algorithm, advance the speed of the whole system and remark the advantages and disadvantages of the popular algorithms based upon the experimental datas ; sixthly we realize the algorithm library of elliptic curve cryptography based on the f2m. only change slightly in our algorithm library can we realize the ecdh, eces, ecdsa based onf2m of anysize ; seventhly, we realize the ecc on two secure elliptic curves, including ecdh, eces, ecdsa

    本文首先介紹並分析了橢圓曲線密碼體制的優點及研究現狀；其次研究了橢圓曲線密碼體制的基本理論；第三，分析了橢圓曲線密碼的安全性並介紹了密鑰共享，加密，數字簽名等橢圓曲線密碼體制；第四，深入研究了特徵為2的有限域f _ 2m中的元素在多項式基和最優正規基表示下的乘法運算和乘法逆運算的快速演算法，並對hankerson等人提出的多項式基下的乘法運算的快速演算法作了改進，而且在實驗的基礎上不僅分析研究了f _ 2m域中元素在多項式基和最優正規基表示下的乘法和乘法逆運算的性能，還對這兩種基表示下的f _ 2m域中元素運算效率的優劣作了比較和研究，所得的結論可供在實現橢圓曲線密碼體制時參考；第五，研究了目前流行的計算橢圓曲線標量乘法的快速演算法，同時改進了固定基點梳形法，提高了整個系統的速度，並在實驗的基礎上分析研究了流行演算法的優劣；第六，實現了基於f _ 2m的橢圓曲線密碼體制的演算法庫，在我們的演算法庫中只需稍微改變便能實現基於任意尺寸的f _ 2m上的ecdh ， eces ， ecdsa等橢圓曲線密碼體制；第七，實現了兩條安全橢圓曲線上的橢圓曲線密碼體制，包括ecdh ， eces ， ecdsa 。
  5. The chinese word wuli was first examined in literature of the warring states period. according to its wide use in ancient china, the word refers in general to the principle of all objects or the natural laws. in ancient times the meaning of wuli is similar to physics in the west. the translation of the english word physics was made some alterations in the introduction of western science during the ming and qing dynasties. from the 17th to the early 19th century, some chinese books on physics translated by protestant missionnaries were annotated and translated in japan. after the sino - japanese war reversed the flow of knowledge between china and japan. from the second half of the 19th century to the early years of the 20th century, the translation of the english word physics was defined early or late in japan and china. now the range and object of physical research are continually changing along with the rapid development of modern physics

    「物理」一詞，在中國古代最早見于戰國，此後在各種典籍中被廣泛使用，其含義泛指萬物之理與自然規律，這種含義與西方古代「物理」一詞的含義相近.明清時期西學東漸， 「物理」一詞的翻譯幾經變化.古代日本的科學在相當程度上受到中國的影響， 17世紀至19世紀上半葉來華傳教士譯述的物理書籍也在日本被注釋翻譯.甲午戰爭后，中日兩國之間科技交流的態勢發生了逆轉. 19世紀下半葉至20世紀初，日中兩國「物理」一詞的譯名先後確定.隨著現代物理學的迅速發展，物理學研究的范圍和對象又在不斷地變化
  6. This paper introduces the importance of the cost control in the e - commerce, and probes into the recessive cost control of the material flow in the e - commerce from four aspects of the order cost control, the customer - obtaining - and - retaining cost control, the cosl control though the strategical alliance and combination marketing and scale economy, and the cosl control through working rationally out the reverse material flow policy

    介紹了電子商務成本控制的重要性，並從訂單成本的控制、獲得顧客與留住顧客的成本控制、通過戰略聯盟和組合營銷及規模經濟控製成本和通過合理制定逆向物流政策控製成本4方面探討了電子商務物流隱性成本控制。
  7. The operation principle, stability and current ripple of the output filter inductor between serial and parallel modes are analyzed. a 1000 va serial and parallel combined dual buck half - bridge inverter ( dbhbi ) has been implemented to verify the analysis

    文章分析了該逆變器的工作原理、串並聯兩種運行模式對輸出濾波電感電流脈動、輸入電壓脈動、系統穩定性的影響，並以1000va雙降壓式半橋逆變器為例進行了實驗驗證。
  8. Finally, the experimental study of the reversible rectifier is done. the resultfof the experiment proves that both the theoretic analysis and the simulation results are correct

    根據原理電路的理論設計製作了一套硬體電路，並對此電路進行了整流和逆變的實驗研究，驗證了電路的模擬和理論分析的正確性，為實際工程應用打下了一定基礎。
  9. Due to irrational land utilization, absurd assarting and herding, a series of environmental problems, such as sandy soil, grassland degeneration, soil and water loss, appeared, which severely threatened to survival and development of human being. it was proved that biomic - measure was the radical measure of ecology environment construction and harnessing. thus, a research on choosing a kind of grass, which was good, stronger stress resistance and faster growth velocity, was carried out

    黃土高原半乾旱區多年來由於不合理的土地利用和濫墾濫牧等現象，致使土壤沙化，草地退化，水土流失等一系列生態環境問題嚴重威脅著人類的生存與發展，多年的研究已證明，生物措施是生態環境建設與治理的根本性措施，因此，針對目前的自然現狀，選擇抗逆性強、生長快、生產中急需的優良牧草進行了定位試驗研究。
  10. In astrophysics, a white hole is a postulated celestial body that spews out matter, in other words an anti - black hole, or the time reversal of a black hole

    在天體物理學中，白洞是一個假定向外噴吐物質的天體，換句話說就是一個反黑洞，或時間逆向流動的洞。
  11. Some research about sensorless control of induction motors in recent years has been introduced in chapter one. in chapter two, a field - oriented control system with current regulator and voltage source inverter ( vsi ) is presented firstly, which is proved in theory that the voltage feed - forward decoupler can be omitted, the good decoupled control properties of flux current and torque current is also validated by experiments with speed - sensor based on f240dsp real system

    論文第二章從異步電機的基本數學模型入手，介紹了一種基於轉子磁場定向的帶電流內環控制的電壓型逆變器輸出閉環矢量控制結構，在理論上證明了該模型可省略電壓前饋解耦環節，採用f240dsp晶元構建的帶速度傳感器實驗系統驗證了其定子電流勵磁分量和轉矩分量有良好的解耦控制特性。
  12. Regard how to structure the control system of sensorless bldcm with dsp - tms320f240 as the centre in this paper, the detailed argumentation course of the motor startup, bemf terminal voltage measurement and control strategy is given out, give and pay concrete details for the software and hardware realization and experimental result. in order to treat the bldcm control system with dsp clearly, the full paper divides into six chapters altogether : chapter one, introduceing the development course, the structure characteristic and operation principle, etc. of bldcm in the introduction ; chapter two, directed against the startup issue of bldcm, the chapter give and publish the rotor measure pulse orients technology for motor startup in detail ; chapter three, proceed with mathematics model of the bldcm, expounding the control schemes ; chapter four, two important devices introducing : dsp ( 240 tms320f ) and power invertor control chip ( ir2131s ) ; chapter five, give and publish the detail of hardwares of control system ; chapter six, by ccs ide of ti, realize the control schemes in the front chapters with software, offere the procedure flow chart of main subroutine and some key place of programming, the experiment result in addition

    全文共分六章：第一章、緒論中介紹了bldcm的發展歷程、電機本身的結構特點和工作原理等；第二章、針對五位置傳感器bldcm的起動問題，文中詳細給出了檢測脈沖轉子定位起動技術；第三章、從電機的數學模型入手，詳細論述了反電動勢端電壓法和系統的控制策略；第四章、介紹了硬體實現中的兩個重要器件： dsp （ tms320f240 ）和功率管逆變器控制晶元（ ir2131s ） ；第五章、詳細給出了控制系統的硬體實現細節；第六章、利用ti提供的ccs集成開發環境，將前面章節的控制方案用軟體加以實現，給出了主要部分的程序流程圖和一些編程要點以及實驗結果。
  13. By the means of theory, simulation and experiment, the second part of this paper is then analyzed which is on the equivalent output resistance and inductance of the selected inverter and the effect to the output voltage ' s amplitude and phase caused by the different values of the inverter ' s component. it is concluded that by selecting certain precision level components, the difference of the output voltage amplitude is much greater than that of the output voltage phase

    其次通過理論、模擬和實驗分析了本文所採用的電壓電流雙閉環瞬時控制方式逆變器的等效輸出阻抗和兩臺逆變器器件差異對輸出電壓的幅值差和相位差的影響，從而得出選用一定精度的器件，兩臺逆變器輸出電壓的幅值差比相位差大得多的結論。
  14. Firstly, based on the utilization of the first and second law of thermodynamics, the ideal combined camot cycle model is set up. secondly, aimed at the insufficient of the classical thermodynamics analysis method, the popular method - - finite time thermodynamics analysis is applied to set up the model of endo - reversible combined carnot cycle. finally, the optimization relationships between the specific heating load ( shl ) and operating parameters and between shl and cop are conducted according to the characteristics of the function and investment of aht

    在首先利用熱力學第一、二定律分析方法的基礎上，建立了吸收式熱變換器的理想聯合卡諾循環模型，然後針對經典熱力學分析方法的不足，利用了當前很流行的有限時間熱力學分析手段，建立了aht系統內可逆聯合卡諾模型，根據熱變換器的功能、投資等方面的特點，導出了吸收式熱變換器比供熱率與操作參數、比供熱率與熱力學性能系數的優化體系。
  15. Then, the cc - pwm linear current control strategy is also studied in detail in this paper, and two improved self - adaptive pi controllers are brought forward on the basis of fuzzy logic control theory and fuzzy logic neural network control theory which sufficiently takes advantage of self - learning capability of neural network. they can greatly improve the dynamic performance and cc - pwm system can achieve fast system dynamic response

    論文深入研究了cc - pwm逆變器的線性電流控制策略，並提出了模糊自整定pi控制和基於神經網路的模糊推理自整定pi控制兩種改進型智能pi控制演算法，其中的模糊神經網路pi控制演算法充分利用了神經網路具有很強的自學習能力的特點。
  16. Then, the theoretical analysis of the 3 - phase reversible rectifier circuit is performed in detail. after that a 1kw 3 - phase pwm rectifier is designed in theory and hi practical. in the third chapter, the computer simulation based on matlab is carried out through the simulation, a number of simulation data are gained for studying the relation between the circuit parameters and the reversible rectifier characteristics

    首先對三相功率因數校正技術作了分析和比較，確定本課題研究的內容，指出其研究價值和意義；然後對三相高功率因數可逆整流電路作了理論分析，並在此基礎上，對一個1kw的三相高功率因數可逆整流電路進行了理論設計；利用matlab軟體，建立了計算機模擬模型，對系統的整流和逆變工作特性進行了模擬研究，得到了各電路參數和控制參數與系統性能之間的關系。
  17. The article gives a definition of reverse logistics in broad sense which includes returned logistics, waste material logistics and ineffective logistics, analyzes the characteristics and importance of reverse logistics and puts forward some measures and suggestions

    本文將廣義逆向物流界定為包括回收物流、廢棄物流和無效的物流活動在內的物流流程，分析了逆向物流的特點和重要性，提出了逆向物流的管理和控制措施。
  18. The analysis shows that it has good performance even with unsymmetrical load. this paper mainly describes the circuit scheme, operation principle, parameter design of this three - lever hysteresis current controlled inveter and analyses the stiffness and stability of the system

    本文主要介紹了三態電流滯環控制型逆變器的電路結構、工作原理和主要參數的設計，並對系統的外特性和穩定性進行了分析。
  19. Its test results indicate : voltage mode inverters with high frequency link have the advantages such as high frequency electrical isolation, simple topology, two - stage power conversions, high power density, bidirectional power flow, good line current waveform, low audio noise, high converting efficiency, and high input power factor etc. this kind of converter lay the key technical foundation on new type high power density, high efficiency and low cost asi

    設計的1kva270v 10 % dc / 115v400hzac單極性移相控制雙向電壓源高頻環節逆變器原理試驗表明，這類逆變器具有高頻電氣隔離、電路拓撲簡潔、兩級功率變換（ lfac / hfac / lfac ） 、功率密度高、雙向功率流、音頻噪音低、變換效率高、網側功率因數高等優點，為新一代高功率密度、高變換效率、低成本航空靜止變流器奠定了關鍵技術基礎。
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