介質功率系數 的英文怎麼說

中文拼音 [jièzhígōnglǜxìshǔ]
介質功率系數 英文
dielectric power factor
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  • 功 : 名詞1 （功勞） exploit; merit; meritorious service [deed]: 戰功 military exploits; 立功 render me...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. The system realizes multiple serial port communication and management by way of multi - port serial board ( 2 ) use the database technology to manage and manipulate the physics information data of nc tool. the basic information management system, the nc program auto - create system, the simulation of cutter working and dnc communication program are integrated to one system. it realizes the offline programming and controls of no - punched tape, helps to cut short the supplementary cutting time and improves the efficiency of to program and machine tools and realizes the separation and seamless connection of program and manufacture

    本課題以硬體為輔助手段，以軟體為主要手段實現了以下功能：以串口擴展卡來實現網路中多臺數控機床的通信和管理；使用數據庫技術對數控機床的物理信息進行管理和操作，將數控機床基礎信息管理系統、 nc程序自動生成模塊、刀具加工軌跡模擬模塊和dnc通信介面模塊集成為一體，實現了數控加工的離線編程和數控系統的無帶控制，提高了編程效率、質量，縮短加工輔助時間，提高了機床的效率，既實現了編程和加工的分離，又達到它們之間的無縫連接。
  2. Finally, the situation of system test is introduced. at the same time, the paper affirms the significance of system research, which completely meets with the requirements of digitized, network - depended, information shared facture of tv program. also, some limitations of system function are indicated

    最後，論文對系統的測試情況進行了介紹，肯定了本應用系統的研製成功對電視臺實現電視節目製作數字化、傳輸網路化、節目信息共享化、播出自動化和管理科學化，從而提高電視臺節目播出質量和運作效率的重要意義，並指出了系統有待完善的地方。
  3. 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。
  4. At last, we illustrate the imaging process of nonlinear medium by numerical simulation, and the image position and intensity are studied. at the same time, it is pointed out that a piece of nonlinear medium and high power laser beam can form a hologram system. for the first time, we found that a " dark image " ( or " cold image " ) may emerge along with a " hot image "

    最後，我們研究了「熱像」的形成機理及其規律，用數值模擬的方法形象地說明了非線性介質的成像作用，提出了用非線性介質和高功率激光形成全息成像系統的概念和思路，豐富了「全息成像」內涵，同時，首次發現了亮像和暗像同時並存的現象。
  5. Diamond is a remarkable material due to its special crystal structure, which shows high hardness, low friction coefficient, high thermal conductivity, high optical transparency, low permittivity and high band gap etc. cvd diamond films are widely used in mechanical coating, heat sinks, optical window, semiconductor devices and other application fields because of its low price and high performance

    金剛石的特殊晶體結構使其成為一種性能優異的功能材料，它具有高硬度、低摩擦系數、高熱導率、高透光率、低介電系數和高禁帶寬度等性質。化學氣相沉積制備金剛石膜成本低、質量高，廣泛應用於工具塗層、熱沉、光學窗口、半導體器件等方面。
  6. In this paper, first, the study of the distribution of electromagnetic field, energy, power, reflection coefficient and transmission coefficient in waveguide with piecewise different dielectric constants are studied. then, the behavior of propagation of am signal and gauss pulse signal through the waveguide are simulated by magic code ， and the plots of electromagnetic field, energy, ponyting vector and their spectrums at different time and different position are obtained. and, the group velocity and energy velocity of wave packet through barrier are calculated

    從90年代開始， emig和martin 、 landauer等人研究了分段填充不同介質的波導中的電磁脈沖的傳播。在本論文中，作者首先推導出分段填充不同介質的波導中的電磁場分佈、能量、傳輸功率以及反射系數和傳輸系數的表達式，然後，採用magic程序模擬了這種波導結構中電磁波的傳播情況，得到了在不同時刻和不同位置處的電磁場分布圖、能量圖、坡印廷矢量圖以及它們的頻譜圖，並由模擬結果計算了波包穿越勢壘的群速和能量速度。
  7. In this paper, first, 1 made a study of the distribution of electromagnetic field, energy, power, reflection coefficient and transmission coefficient in waveguide with piecewise different dielectric constants. then, i simulated the behavior of propagation of am signal and gauss pulse signal through the waveguide by magic code, and gave the plots of electromagnetic field, energy, ponyting vector and their spectrums at different time and different position

    在本論文中，作者首先推導出分段填充不同介質的波導中的電磁場分佈、能量、傳輸功率以及反射系數和傳輸系數的表達式。然後，採用magic程序模擬了這種結構的波導中的電磁場的傳播情況，得到了在不同時刻和不同位置處的電磁場分布圖、能量圖、坡印廷矢量圖以及它們的頻譜圖。
  8. According to the tests on ball - feed ratio, medium filling percent age, ground pulp density, active power and grinding efficiency, the authors anal yse main factors affecting ball mill s active power and grinding efficiency, es tablishing the relationship between ball mill s internal state ( such as ball - f eed ratia, medium filling percentage and ground pulp density ) and external param eters ( such as active power and grinding efficiency ) and giving appropriate oper ating parameters for improving grinding efficiency

    通過對球磨機球料比、介質充填率和磨礦濃度與有功功率和磨礦效率試驗，分析了影響球磨機功率和磨礦效率的主要因素，建立了球磨機內部狀態（球料比、介質充填率和磨礦濃度）與外部參數（有功功率、磨礦效率）之間的關系，提出了改善磨礦效率的合理操作參數。
  9. The paper explores the ai theories of developing the capp expert system, and fixes on the knowledge representation method of production rules, and the new thought of developing the knowledge base and the inference engine in the es tool clips, and introduces the theoretical knowledge of clips. the pape builds up the knowledge base about the process knowledge, invents the inference engine by the theories of control strategy of forward reasoning and rete pattern matching algorithm, with the result of improving the reliability of knowledge, the quality of inference and the efficiency of the searching. using the dynamic interface mechanism and the compiled dll, the paper embeds the clips program into the vc + + environment and carries out the mixed programming so as to achieve the data communication between the vc + + and clips

    論文對開發capp專家系統的人工智慧理論作了比較深入的探討，確定了產生式規則的知識表示方法和用專家系統開發工具clips來開發系統的知識庫和推理機的新思路。在闡述了clips理論知識的基礎上，確定了以產生式規則構建工藝知識庫，以正向推理的控制策略和里德演算法的匹配模式建立推理機，從而提高了知識的可靠性、推理質量與搜索的效率。論文利用windows環境下的動態介面機制，調用已編譯好的動態鏈接庫clips . dll ，把所開發的clips程序嵌入到vc + +中再進行混合編程，實現了vc + +與clips程序的數據通信，成功地構建了capp專家系統。
  10. In this paper a newly develoed helical coordinates is used to make out the solution of electromagnetic fields in the helix gap and calculate dispersion characteristics of tape helix slow wave structure for the first time. strict boundary conditions for magnetic fields are adopted and are treated rigorously by fourier expansion. besides, the radial propagation constant of every layer in the dielectric - loaded region is differentiated. some of practical tape helix slow wave structures have been calculated for dispersion characteristics and the calculated values accord with measured values very well. the authors also compare the calculated results with experiments for different structures by changing tape thickness or other structure parameters and find that the theory in the paper is universal

    本文首次運用螺旋坐標系給出了帶狀螺旋線縫隙內的電磁場解，並據此計算了帶狀螺旋慢波結構的色散特性.文中採用了嚴格的邊界條件，並以傅立葉展開進行了嚴格的數學處理.另外還首次對有介質區域內各層的徑向傳輸系數作了區別.本文使用這種方法計算了我們已研製的一些寬帶高功率行波管所用的慢波線結構的色散特性，理論與實驗符合得很好.我們還計算了不同結構參數對色散特性的影響，並與實驗作了對照，發現本文的理論有一定的普適性
  11. Especially in our country, from the government to local ity and the professions, the scientific subjects in a i i kinds of research plans, during the course of appraisement, are to be adopted the method of the peer preview with almost no exception. the research purpose of this subject is to classify the scientific subjects according to their objectives and qualities ; to determine a selecting requirement used by the peer experts so as to be fixed in the course of pract i ca i appra i sement under the gu i d i ng i deo i ogy of open, fai rness, impartiality ; to establ i sh var ious appraising standard and real izing measures due to the guide of existing appraise management theory and the principles that the determination of qua i ity should be combined with quantity, so as to make the peer preview system more scientific, more objective, more operational. this article first introduces the basic concept, the essence and the appraisement of the peer preview, then divide the various scientific planning subjects in our country into three parts of the basic research, the appl i cat ion research and spread of the achievement, the industrial subjects

    本文首先介紹了同行評議的基本概念、同行評議的實質、同行評議系統的評價；然後，將我國各級各類不同性質、不同目的的科技計劃項目，劃分為基礎研究、應用研究和成果推廣與產業化項目三大類；介紹了科技項目的申報及評審程序；根據不同類型科技項目立項的評審過程，提出了同行評議專家遴選的基本要求，建立了同行評議專家基本情況指標體系及模型，對同行專家評議的工作業績，提出通過評議項目累計數、離散率、命中率和成功率來進行評價；針對不同類型科技項目的特點，建立了較為準確、公正、可靠、可比、現實的評價指標體系；並在此基礎上，提出了若干演算法及解決方法；最後，對現階段國內外同行評議研究與實踐中應注意的幾個方面，提出了建議意見與對策。
  12. The thesis is composed of 9 parts : the background, significance, main topics and innovations in the thesis are introduced in chapter 1 ; in chapter 2, the main function and performance of interface circuits are described from the view of system by using the example of gigabit ethernet ' s transceiver ; the transmission media ' s frequency characteristics and model are analyzed for the high - speed data transmission system in chapter 3 ; the line driver is presented in chapter 4 ; the equalization principles for high - speed data transmission system are introduced in chapter 5 ; a novel adaptive equalizer for 1000base - cx transceiver is presented in chapter 6 ; in chapter 7, a fixed equalizer for 2. 5gbps transceiver is described ; in chapter 8, layout design and measured results are discussed ; at last, the conclusions are drawn in chapter 9. during period of finishing the thesis, i read lots of literatures about the interface circuits in high - speed data transmission system, studied their principles and design techniques, and designed : 1 、 the line driver for 2. 5gbps baseband copper cable transceiver ; 2 、 the fixed equalizer for 2. 5gbps baseband copper cable transceiver ; 3 、 the fixed equalizer for 1. 5gbps sata ( serial at attachment ) transceiver ; 4 、 an adaptive equalizer for 1000base - cx transceiver

    論文由9部分組成：在第一章引言中介紹了論文的背景、意義、國內外研究現狀，以及論文的主要內容和創新；第二章以千兆位以太網為例，從系統的角度介紹了高速數據傳輸系統介面電路的主要功能和性能指標；第三章分析了高速數據傳輸系統的傳輸介質的頻率特性和模型；第四章描述了線驅動器的設計原理及其電路實現；第五章描述了高速數據傳輸系統的均衡原理；第六章描述了適用於1 . 25gbps基帶銅纜收發器系統的自適應均衡器的設計原理和電路實現；第七章描述了適用於2 . 5gbps基帶銅纜收發器系統和1 . 5gbps串列硬盤介面（ sata ）收發器系統的固定均衡器的設計原理及其電路實現；在第八章中分析了電路的版圖設計及晶元測試結果；最後，第九章總結了全文。在完成論文期間，查閱了大量的有關高速數據傳輸系統介面電路方面的文獻，較系統地學習了線驅動器、傳輸線和均衡器等方面的理論知識和電路設計原理，設計了用於： （ 1 ） 2 . 5gbps基帶銅纜收發器系統的線驅動器； （ 2 ） 2 . 5gbps基帶銅纜收發器系統的固定均衡器； （ 3 ） 1 . 5gbpssata系統的固定均衡器； （ 4 ） 1 . 25gbps基帶銅纜收發器系統的自適應均衡器。
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