第二層轉發 的英文怎麼說
中文拼音 [dìèrcéngzhuǎnfā]
第二層轉發
英文
lf-
It has the advantages of delivering routes between the layer 3 which are connectionless and the layer 2 which are connection - oriented. through constant research and countless experiments, the method of seamless integration with customer intranets has been found out, so that we only buy the customer equipment once, and the upgrade of the network only needs to modify the configurations but not needs to change the consumer equipment
Mpls改進了專線組網的缺點，兼有無連接的第三層路由和面向連接的第二層轉發的優點，通過研究和不斷實驗，找到了用戶內部網無縫集成的方法，從而使用戶端的設備投入一次到位，網路升級只需修改一下配置，用戶端硬體不用做任何改動。Based on the feature technology and object - oriented mechanism, we found the manufacture - oriented three levels ( namely part, feature and geometry ) model of mechanical part and the resource model ; secondly, we realize the concurrent design of mechanical part and process through decomposing cycle, and then we constitute the evaluation guidelines on the basis of evaluation strategy of levels, which carry out from two levels ( part and feature ) and four phases ( part rough evaluation, feature rough evaluation, feature detail evaluation and part general evaluation ) ; thirdly, we put forward some evaluation methods according the evaluation guidelines, which include the rule - based process evaluation method, rule - based and fuzzy evaluation - based method associated with resources, case - bas ed and feature - based cost estimation method ; at last, we give a manufacturing - oriented evaluation system of rotating mechanical part, which validate the evaluation guidelines and method of the dissertation useful and practical
以特徵技術為基礎，面向對象的編程機制為手段，建立了面向製造的三層次（即零件層、特徵層、幾何層）零件模型；同時進行了面向製造的資源建模。第二，通過細化循環，採用分層遞階的評價策略，分兩層（零件層和特徵層）四個階段（零件初評價、特徵初評價、特徵詳細評價和零件總體評價）建立可製造性評價指標；第三，以評價指標為基礎，分別提出了基於規則的結構工藝性評價方法、基於規則和模糊綜合評判定性和定量相結合的加工可行性評價方法、以及基於實例和特徵的加工成本估算方法；最後，以solidworks為開發平臺， vb6為編程工具，初步構建了面向製造的回轉類零件可製造性評價系統，它們驗證了本文評價指標和評價方法的實用性和可行性。In this paper, the design of electric forklift driving controller is demonstrated. otherwise, can is added into this controller, so as to build up can networks with other modules equipped with can controllers. this paper is composed of 7 chapters : in the first chapter, the background of the paper is introduced ; in the second chapter, the structure of electric forklift is demonstrated ; in the third chapter, first the math model of series motor is found, then the motor is controlled as improved p1d control rule ; in the fourth chapter, the principle and realization method of forward and reverse rotation and back - feed brake are explained ; in the fifth chapter, the principle of can and design of application layer in can are illuminated ; in the sixth chapter, the principle of e2prom is clarified ; in the last chapter, summary of the whole paper is given, and prospect in this field is made
全文共分七章：第一章緒論，介紹了論文背景；第二章，系統綜述，介紹了電動叉車的整車結構；第三章，串勵電機的建模、改進的pid演算法及其軟硬體實現，首先根據串勵電機的機電特性推導出數學模型，然後在此基礎上結合pid控制規律對電機進行控制；第四章，串勵電機的正反轉及回饋制動，介紹了實現電機正反轉及回饋制動的原理及方法；第五章， can網路實現模塊間通訊，介紹了can總線原理及can總線應用層設計；第六章，用串列e ~ 2prom實現參數設定，介紹了串列e ~ 2prom的原理；結束語，對本論文進行了總結，並對該領域的發展進行了展望。With frame gather card and ccd, metallographic image which can be processed by computer is acquired after a serials of the applications of digital image technique such as gray level transformation, dichotomy, noise eliminating, dilation and erosion, image enhancement, boundary detection, etc. an automatic quantitative metallographic analysis system is developed with visual c + + 6. 0 to realize the measuring of the size of the metal crystalline grain, evaluation the proportion of the second tissue of the metal, micro hardness. with three - level browser / server mode and active server technology, the system gives the remote user the applying service through network to communicate and analyze the image information
利用數字圖像處理技術，對圖像採集卡或ccd攝像頭採集到的金相圖像進行灰度轉換、二值化、噪音消除、圖像增強、邊緣提取等一系列圖像預處理，獲得計算機可以處理的數字圖像；並利用visualc + + 6 . 0開發定量金相分析系統，以實現對晶粒大小、金相組織第二相相對含量、顯微硬度等參量的自動測量；採用基於browser server的三層體系結構，通過網路訪問，並利用activeserver技術給遠程用戶提供應用服務，以便於根據圖像分析結果，給出專家分析意見，實現異地分析及交流。In the third section ? basic rules of the evolution of traditional pc channel in domestic, the following aspects are analyzed in two sides : the first side includes the overall skeleton of the development of channel analyzed from its form ; the certain orientation of the evolution of the channel passing through, which mainly consists of the transforming process as the following : traditional direct sales - * combination of traditional direct sales and dealership ? hannel mode of multi - level dealership - * channel mode of overall, flat multi - channel ? ombination of modern direct sales and short channel ? odern direct sales
在第三節國內pc傳統渠道演變的基本規律中一方面從形式上分析了渠道發展的整體脈絡，指出所經渠道的演變就有一定的方向性，主要是從傳統直銷傳統直銷與代理制相結合多層次代理制渠道模式全方位、多渠道扁平式渠道模式現代直銷與短渠道相結合- -現代直銷。另一方面從職能上分析了渠道功能的轉化。在第二部分中，通過對國內pc渠道現狀思考，指明pc業渠道重整的核心在管理：一方面是廠商對代理的管理，另一方面是代理商自身的管理。From ocm layer to 30cm layer, the first rotated loading vector field in every layer reflects the anomalous soil humidity pattern in huai river basin, we call the pattern structure as " huai river pattern ". while from 30cm layer to 50cm layer, the second rotated loading vector field in every layer is also quite similar to " huai river pattern ". in the summer and autumn the " huai river pattern " is still remarkable but the feature is less prominent than that in the springtime
發現春季以30cm為界， 30cm以上各層土壤濕度異常的第一旋轉空間模態十分相似，其大值中心主要位於淮河流域，而30cm以下（ 30 - 50cm ）各層的第二旋轉空間模態與之亦十分類似，因此稱該模態為「淮河型」 ，而夏季和秋季雖然該模態也很顯著但特徵不如春季突出。The first part summarizes its cultural basis and background of the times ; the second part introduces the history of its more than one hundred years development ; the third part gives a brief introduction of its functions, they are transfer education, vocational education, continuing education, remedial education, community service and general education ; the forth part analyzes its characteristics of running school, trends for future development ; the fifth part gives a thorough generalization of its contributions to massification of american higher education, they are : to enhance the enrollment of higher education, to make the structure of higher education into many - faceted, to consummate the function of higher education step by step, to promote the renewal of knowledge and the progress of technology ; on this basis, in the sixth part, according to china ' s specific conditions of achieving the massification of higher education in two years, the paper gives an all - around analy sis and summary of the enlightens to our higher education from american community college, that is to say, the strategy for mass higher education must employ both pattern of connotation and that of extension, combine dimension expanding and structure regulating
第一部分總結了美國社區學院產生的文化及時代背景；第二部分介紹了社區學院的產生及其百余年的發展歷程；第三部分簡要介紹了美國社區學院的六個辦學功能及其演變過程，即：轉學教育功能、職業教育功能、繼續教育功能、補償教育功能、社區服務功能以及普通教育功能；第四部分簡要分析了社區學院的辦學特點及其未來發展趨勢；第五部分對社區學院為美國高等教育大眾化做出的歷史貢獻等方面進行了縱橫方向的概括，即增加升學機會，提高高等教育入學率；促進高等教育結構多層次和多元化；注重社會服務，使高等教育職能日臻完善、促進了知識的更新和科技進步；在此基礎上，第六部分結合我國將要在未來兩年內實現高等教育大眾化的基本國情，全面分析和總結社區學院對我國高等教育發展的借鑒和啟示。Building topology of bridged lans has two steps. the first is to compute bridge - to - bridge connections, for which a practical algorithm is presented in this paper
第二章討論網路2層拓撲的自動發現演算法，分析了現有的基於地址轉發表的方法，提出一種基於生成樹的新演算法。This paper is composed four parts. first part, purpose and significance of the study, research situation and method will be described. second part, descriptive study the behavior code of conduct of the peasants in city. find out that behxior code of conduct has threecharacters. first, change takes place in approachs of cognition which is mainly composed with communication media rather than consang and rative
第二部分對進城農民行為規范再社會化的狀況進行了描述性分析，發現進城農民行為規范再社會化表現出三個方面的特徵，一是在認知的途徑方面，進城農民已改變過去依靠血緣、親緣為主的途徑，逐步轉向傳媒化的途徑為主；二是在日常生活規范、工作規章制度、法律規范三今方面，進城農民在認知、遵守和認同三個層次表現出一定的差異性。On the other hand, this part puts forward that the evaluation of the practical value of lu ' s moral education thought should base on a scientific criterion, and the criterion is to apply dialectical materialism and historical materialism as the guidance, to critically inherit and make the past serve the present, and to realize the creative transfer within the framework of values established from the following layers : the world culture development, the chinese modernization, and the college moral education
第二部分一方面分析了陸九淵德育思想的特點，另一方面提出了要評價陸九淵德育思想的現代價值，就必須確立一種科學的標準，這種標準以辯證唯物主義與歷史唯物主義為指導，批判繼承，古為今用，在民族優秀文化傳統的發揚、我國現代化建設和世界文化發展三個層次所確立的價值坐標體系中實現陸九淵德育思想的創造性轉換。The main characteristics of this thesis are : 1 it proposes the conception of eme, which is a " theories of middle range " of methodology in moral education and has the characteristics of engineering education. 2 it puts forward the " psychological phenomenon " are resources, which can be recognized and exploited by the methods of engineering. 3 analyzing the exploitation of spiritual resources, it figures that the self - organizing needs the help of the methods of engineering to conduct the conflict of spiritual needs and value views of the students
本文的創新點在於：其一，第一次明確提出了工程德育學是一種中層理論性質的德育方法論，具有明顯的工程學德育研究特色；其二，提出思想現象（思想問題）是一種潛在的可開發的精神資源，這種精神資源的開發需要運用工程的手段；其三，對精神資源的開發，尤其是對精神系統的自組織過程進行了分析，提出精神需要是學生思想品德形成與行為轉化的動因，價值沖突的引導是精神系統自組織演化的關鍵，從而為高校德育工作的有效開展提供了可操作化的參考意見。分享友人