direct process paper 中文意思是什麼

direct process paper 解釋
重氮感光紙
  • direct : adj 1 筆直的，一直線的；正面的。2 直接的。3 直截了當的，直率的，明白的。4 直系的，正統的。5 【語...
  • process : n 1 進行，經過；過程，歷程；作用。 2 處置，方法，步驟；加工處理，工藝程序，工序；製作法。3 【攝影...
  • paper : n 1 紙；裱墻紙。2 報紙，報。3 收據；債券；證券；票據；匯票；鈔票（＝paper money）。4 〈pl 〉身份...
  1. In this paper all kinds of fuel cell, the current research situation and working principle of proton exchange membrane fuel cell ( pemfc ) are outlined. mathematical models in relation to electrochemistry reaction and transfer process in direct methanol fuel cell ( dmfc ) are compared and analyzed. latest progress of membrane materials and instrument analysis technique in dmfc has also been described

    介紹了燃料電池的分類以及質子交換膜燃料電池（ pemfc ）的工作原理和研究現狀，並對直接甲醇燃料電池（ dmfc ）中有關電化學反應及傳遞過程的數學模型進行了比較和分析，描述了適用於dmfc的膜材料以及儀器分析技術的最新進展，認為直接甲醇燃料電池是目前較理想的燃料電池，有著廣闊的發展前景。
  2. Aiming at this problem, the main research issues and achievements in this paper are as follows : bi - directional data transformation between rdb and xml with semantic constraints preserved for most of existing researches on static data transformation between xml and rdb, dtd is taken as the schema description language for xml, and the semantic constraints are often lost during the transformation process. to overcome these disadvantages, the author adopts xml - schema, a standard schema description language proposed by w3c to replace dtd, as the description method owing to its more powerful functions than dtd, and of course with the syntax much more complicated. after analyzing the constraints characteristics in both xml - schema and relational schema, a semantic constraints - preserved algorithm is proposed which can realize the bi - directional schema mapping between rdb and xml through a formalized description of xml based on regular tree and a general expression for relational schema based on direct graph approach

    保留語義約束的xml與rdb雙向靜態數據轉換技術現有研究大多採用dtd （ documenttypedefinition ，文檔類型定義）作為xml的模式描述語言，並且在模式映射過程中丟失語義約束信息，本文分析了xml - schema （ xml - schema採用與dtd完全不同的語法，數據描述能力更強同時也更為復雜，已被w3c確定為替代dtd作為xml模式描述語言的標準）及關系模式的語義約束特徵，通過基於正則樹的xml形式化描述方法以及基於有向圖的一般關系模式表示方法的研究，建立保留語義約束的xml - schema與關系模式的雙向模式映射演算法，實現了xml與rdb的雙向數據轉換，較好地解決了xml與rdb在靜態數據轉換層面的數據集成問題，可有效滿足企業大量rdb數據面向xml的發布以及與日俱增的xml數據存入rdb的應用需求。
  3. Rapid prototyping technology changed the traditional pattern of product design, which could offer product sample for the designer, reduced design cycle and quicken the schedule of new product design, and it gave the decision - makers visual feeling. ; rp technology provided kinds of molds including resin - boncled mold laminate mold, investment mold and lost foam casting mold and so on for sand casting investment casting and cavityless casting, it could also use direct shell production casting to make pattern dies metal dies die - casting dies injection dies directly, and it could even produce casting products in small scales. the applications of fdm technology in plaster precision casting and the rapid casting technology based on sls technology were introduced, the organic combination between rapid prototyping tecnnology and foundry process, which initiated a new period of rapid manufacturing metal parts, by using advanced new technology alternated traditional foundry industry to make it looked brand - new, thus, the competition of foundry industry would be improved ; rapid prototyping technology offered a rapid economical feasible technical method, common processes of using rapid prototyping technology to produce dies were discussed, in the paper it explored that. the problem of combining rapid prototyping technology with electric arc metal - spraying technology to make metal dies and technics in dies manufacturing of combining rapid prototyping technology with precision casting, rapid tooling based on rapid prototyping, integrated advanced new technology and tradition technology of rapid prototyping manufacture, each superiority were exerted, rapid prototyping technology had been an efficiency measure to rapid update products and develop new product, and to middle -

    快速成型技術改變了傳統的產品開發模式，可以為設計者提供產品樣件，縮短設計周期，加快新產品的開發進度，為決策者提供直觀性；快速成型技術迅速提供砂型鑄造、熔模鑄造、實型鑄造用的各種模樣，包括樹脂模、層壓模、熔模和消失模等，還可採用直接制殼鑄造法直接製造熔模鑄造用的壓型、金屬型、壓鑄型、注塑模，甚至直接製造小批量鑄件，介紹了熔積成型技術在石膏型精密鑄造上的應用和基於選擇性激光燒結技術的快速鑄造技術，快速成型技術與鑄造工藝的有機結合，開創了快速製造金屬零件的新階段，對用高新技術改造傳統的鑄造工業，使其面貌煥然一新，增強鑄造行業的競爭能力；快速成型技術為母模的製造提供了一條快速、經濟、可行的技術途徑，討論了利用快速成型技術製造模具的一般工藝方法，探討了將快速成型技術與金屬電弧噴鍍技術結合起來快速製造金屬模具問題，以及快速成型技術與精密鑄造技術相結合的模具製造工藝，基於快速成型製造的快速模具技術，集成了快速成型製造高新技術和傳統技術，發揮各自優勢，已成為產品快速更新換代和新產品開發及中、小批量生產的有效手段之一。
  4. 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。
  5. Comparing to the direct drain cool - down process used in china, the natural precooling cycle, which may save the propellant of the precooling, simplify the prestart program, delay the ignition of the rocket and be more safe in the process of precooling as well is employed in this paper

    國外在該項領域的技術已經在實際火箭發射場得以應用，相比之下，我國仍採用排放式的預冷方法。因此，需要研究低溫液體火箭發動機循環預冷的方法，盡快實現趕超發達國家的目標。
  6. A new computational formula to nonlinear adjustment by parameters, in consideration of the second - order terms, is derived in this paper from the precise orthogonality condition equations to nonlinear least squares by analyzing the direct solving process and iterative computing method of the linearized model

    在分析線性化的非線性參數平差的近似直接解法與迭代解法基礎上，利用非線性最小二乘的精確正交性條件方程，推導出顧及到二次項的非線性參數平差的一種新的計算公式。
  7. Based on the traditional transportation problem with the balance of production and sales, this paper puts forward a direct method to solve the transportation problem whose objective is to maximize the problem - the modified tabular method, so as to diminish the calculation work, reduce the difficulty of the problem, and explain the economic value of the calculating process in solving real problems at the same time

    摘要從傳統的產銷平衡的運輸問題出發，提出了目標函數為極大化型的運輸問題的直接解法修改的表上作業法，可直接求解此類問題，減少運算量，降低應用難度，並在求解過程中明確了求解方法所對應的實際問題的經濟意義。
  8. We start this paper with the mathematical model of the spect problem. the ( direct ) process that a photon emitting from the source follows its path toward the camera is described in mathematical and physical languages

    本文從問題的數學模型開始，用數學和物理的語言詳細闡述了光子由放射源出發直至最終到達檢測器的整個過程，也即通常所說的正過程。
  9. In this paper, at first we introduce the purpose, significance, domestic and foreign research present situation of network tomography. we give a detailed presentation on tomography and measure methods by different classified method. after introduced the elementary knowledge about tomography, we elaborate in detail the derivative process of multicast - based direct estimator algorithm, expectation maximum algorithm and unicast - based loss inference method

    本文首先介紹了網路透視的目的、意義和研究現狀，按照不同的分類方法介紹了幾種主要的網路測量和網路透視方法;在介紹了網路透視技術的基礎知識后，詳細闡述了多播透視演算法中直接估計演算法（ directestimator ）和最大期望演算法（ expectationmaximum ）的推理過程，以及單播透視的丟包率推理演算法。
  10. This paper reports the droplet size and distribution, penetration and diffusionangle of fuel spray before and after impingement by multiple - picture overlapping photography and laser technology, as well as the fuel spray mixing and burning process in a direct injection diesel engine by high speed photography

    本文介紹了用多次噴霧疊加攝影與激光粒子分析技術對燃油噴霧撞擊前後的粒徑、貫穿度以及噴霧錐角等因素變化所進行的觀察和測量以及介紹了利用雙像高速攝影技術對燃油束撞擊霧化形成的混合氣以及燃燒過程特點的研究。
  11. This paper aims at the shortages, which are too much information, too long - processing time, low precision, needing checking and revising, of stl form file in the front processing of laser rapid prototyping, it puts forward a method of 3 - d cad model direct slicing, and it will process section profile curve that direct slicing produces so that this section profile curve will be used in sequent numerical controlling machine tool. direct slicing on the model can reduce data - processing time and file dimension, advance precision of work pieces

    本文針對快速成形前處理過程中使用的stl （ stereolithography ）格式文件的信息冗餘量大，數據處理時間長，精度差，需要檢查和修改等缺點，提出了對三維cad模型直接切片的方法，並對直接切片獲得的截面輪廓線進行了處理使之能夠被后續的工控機所使用，通過對模型的直接切片，能減少數據處理時間，降低文件規模，提高工件精度。
  12. This paper is to develop a model on synthesis reaction of methanol using material and thermodynamics balance, and to utilize matlab to solve multielement nonlinear equation set on proposed model, so calculate balance composition of reactions, parameters of various materials, various process criteria such as methanol output and consumption according to given operation conditions, thereby can quantitatively analyze the effect of various operation conditions on process criteria, so that direct the actual chemical operation, thus assist to determine the optimal operating conditions of synthesis, consequently could forecast various criteria such as yield and consumption according to given conditions of feeds

    摘要通過物料平衡與勢力學平衡對甲醇合成反應過程進行建模，並採用matlab工具對所建模型進行多元非線性方程組的求解，以根據給定操作條件來計算反應平衡組成、各股物料參數、各主要工藝指標如甲醇?量、消耗等，並繼而定量分析各種操作條件對工藝指標的影響，以便指導實際化工生?操作，從而幫助確定最佳的合成操作工況條件，並可以根據給定的原料條件等參數預測合成?量與消耗等指標。
  13. This is a single step process and comparatively cheaper and faster than lithography. the laser direct writing system with polar coordinate and cartesian coordinate is described in this paper

    激光直寫系統要求的器件的精度非常高，我們目前的工作目標是首先實現激光直寫系統的基本功能，在此基礎上，再進行高性能系統的研製。
  14. This paper also discusses direct digital synthesis ( dds ) and digital signal process ( dsp ) in detail, because the application of digital technology is involved in software radio

    本課題由於在軟體無線電中還涉及了數字技術的應用，因此對其中的關鍵部分直接數字頻率合成器（ dds ）和高速數字信號處理器（ dsp ）也進行了詳細地討論。
  15. After referring to domestic and overseas status quo, and studying and analyzing the desulfuration pretreatment technics and variety of factors, a modeling method of neural network based on radial basis function is elaborated in the paper, which can control the process of desulfuration pretreatment. according to the data available, the method can predict the operation parameter, and direct the production effectively, and improve the desulphuriaztion efficiency, yield and quality of finished product

    在深入了解國內、國際研究現狀，研究並分析脫硫預處理工藝流程特點及對脫硫率的各種影響因素的情況下，本文提出了一種基於徑向基函數神經網路的建模方法，對脫硫預處理過程進行智能控制；並根據已經獲得的數據來預報未來的操作參數，有效的指導生產，從而提高脫硫率以及後步工序生產的效率和成品鋼材的產量和質量。
  16. After analyzing the characters windows system in graphic platform, at the same time describing how to use mirror driver in core mode realiz the screen sample. therefore, this paper introduce the character of usb controller chip cy7c68013. the system is a facility image processing system, which can direct link to usb interface and get the digital signal of various images from the computer. the outer device finish the image process

    並在此基礎之上對闡述了如何通過內核模式下的鏡像驅動實現屏幕采樣，並介紹鏡像驅動實現的方法以及如何使用鏡像驅動來實現屏幕的高效采樣，對采樣得到的圖像系統進行了壓縮處理以適應usb的傳輸要求，壓縮程序將採集到的一幀幀圖像壓縮成為mpeg4的流數據。
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