計量書籍 的英文怎麼說

中文拼音 [jìliángshūjí]
計量書籍 英文
metrology books
  • 計 : Ⅰ動詞1 （計算） count; compute; calculate; number 2 （設想; 打算） plan; plot Ⅱ名詞1 （測量或計算...
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 書 : Ⅰ動詞（寫字; 記錄; 書寫） write Ⅱ名詞1 （字體） style of calligraphy; script:楷書 regular script2...
  • 籍 : 1 （書籍） book; record 2 （冊子） registry; roll 3 （籍貫） native place; home town; birthplace ...
  • 計量 : calculate; estimate; meterage; metering; batching; measure
  1. 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。
  2. The definitions and the conditions of cavitation erosion and flash vaporization have been discussed in detail ; the paper also shows examples of different definitions in different books, which cause the complexity of calculating discharge factor and the damage to control valve ; suggests relevant measures to avoid the damage in real working condition

    摘要對氣蝕和閃蒸的定義、產生的條件進行了詳細論述，以規范不同版本書籍在概念上的模糊不清，以及由此造成的調節閥流量系數計算的復雜性和對調節閥的損害，以便採取相應措施，在實際工況條件下加以避免。
  3. The third portion starts from the reality of the education research of our country, and count up the using condition of education researches from the two aspects of journals and books, and analyzes the disadvantages that are caused by misuse : speculation research parts with practise ; quantitative research is lack of the instruction of theory and using mathematics methods that more fit for the complex education phenomena ; qu

    第三部分則從我國的教育研究現狀出發，從期刊、書籍兩方面對教育研究範式的運用情況作了數據統計，分析了我國教育研究範式誤用而導致的種種弊端：思辨研究脫離實踐；定量研究缺乏理論指導，同時缺乏對適合復雜教育現象的數學方法的運用：定性研究則先天不足，缺乏良好的支持環境與生存土壤。
  4. - - - - - paper gets a resolution under the basic of synthetically analyse. this paper is not perfect because the collection of original data is too hard and there are few enterprises in china carrying stock option incentive system. author gets the resolution through a lots of reference books and cases, at the same time, there are also some math instruments as statistics

    但在研究過程中，作者通過查閱大量的國內外參考書籍，綜合了幾十個案例的成敗得失，同時運用統計學、投資學等數學工具，刻苦鉆研，基本實現了企業應用股票期權進行激勵的系統性解決方案，使論文具有較高的理論水平和較強的實踐指導性，論文的主要創新之處是：形成了較為系統的企業股票期權激勵理論和實踐指導體系。
  5. Summary : system this to working characteristic of library, design administrator management, books management, reader information management, circulate 4 subsystems, such as message, etc., 4 subsystem these include main business lines of library, lighten library work load of staff member greatly, have improved the efficiency of management of the library and service quality all - sided

    摘要：本系統針對圖書館的工作特點，設計了管理員管理、書籍管理、讀者信息管理、流通信息等4個子系統，這4個子系統包括了圖書館的主要業務，大大減輕了圖書館工作人員的工作量，全面提高了圖書館的管理效率及服務質量。
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