分組數據單元 的英文怎麼說

中文拼音 [fēnzǔshǔjùdānyuán]
分組數據單元 英文
pdu packet data unit
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 組 : Ⅰ名詞1 （由不多的人員組成的單位） group 2 （姓氏） a surname Ⅱ動詞（組織） organize; form Ⅲ量詞（...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 據 : 據Ⅰ動詞1 （占據） occupy; seize 2 （憑借; 依靠） rely on; depend on Ⅱ介詞（按照; 依據） according...
  • 數據 : data; record; information
  1. Three types of cuticular thickening at the polar region of the guard cells are observed : slight cuticular thickening ; rod - shaped culicular thickening and rarely t - shaped thickening. with data obtained from the former research and personal observation, the cladistic methods were employed for the phylogenetic analysis of data and trees were rooted by out - group comparison using, the related genus kadsura. as result, a new system of the genus schisamdra michaux was reconstructed, and schisandra michaux was subdivided into 2 subgenus, 3 section, 2 series 10 species in this dissertation

    整理有關五味子屬植物研究的資料，補充搜集近期發表的資料和本人研究所得數據，以種為基本單元，選擇近緣的南五味子屬（ kadsura ）作為外類群，採用paup4 . 0b4a軟體對本研究得出的性狀數據作分支分析，重建五味子屬的系統發育，修訂和補充五味子屬分類系統，在五味子屬下設2亞屬、 3組、 2系、 10種。
  2. Representative websites of subject information gateway ( sic ) in china were described as to their establisher, subject type, information structure, management system, metadata application and resource organization

    摘要通過對中國學科信息門戶網站建設現狀的調查，從建設單位、學科類型、信息內容、管理系統、元數據應用和資源組織等方面分析學科信息門戶建設的現狀。
  3. The studies of plane heterogeneity are as follows : the text counts the parameters of the sandlayers " geometric shape of different sedimentous microfacies ; speculates the conditions of lateral communication by sandstone density according to the method brought forward by j. r. l. allen ; gets a group of parameters including the reservoir thickness, porosity and coefficient of permeability by using kriging method according to the data of logging results ; makes certain the direction of coefficient of permeability with variation function by modeling globosity function ; divides the sandlayers into five types by using the method of flowing cell based on three parameters, that is x h, kxh and h / h, and accounts the favorable region. on the base of above - mentioned studies, the text evaluates the heterogeneity of sandlayers and gives the resolutions to these problems to serve the development of the field

    Allen ）等人提出的統計方法，用垂向上砂體密度的界限來推測砂體側向連通情況；根據每口井的測井解釋資料，利用克里金插值法對外間進行插值，得到了一組反映儲層特徵在平面上變化的參數，包括儲層厚度分佈、孔隙度以及滲透率，並且成圖；利用變差函數法，通過球狀函數模擬，確定儲層優勢滲透率方向：根據流動單元法，以儲能系數、容積系數以及凈毛厚度比三個參數為依據，通過聚類分析方法進行流動單元劃分，並且按照參數特徵將其分為五類，統計各砂層有利流動單元區塊。
  4. 1. comparing reservoir beds in details step by step, we have divided and compared the deposition time unit in guan 3 - 6 sandstone bed sets, which has been divided into 20 small beds, 30 time units : rebuilding oil sandstone body data table, building graph database, further analyzing the level and section plane configuration and combination pattern of sandstone, and deducing the maze reservoir geology model of river sandstone, are the most important basis for oil reservoir description and residual oil distribution study

    1 、採用儲層逐級細分對比方法，對館3 - 6砂層組進行了沉積時間單元的劃分對比，共劃分出20個小層、 30個時間單元；重新編制了油砂體數據表，建立了圖表數據庫，並進一步分析了單層砂體平面、剖面形態以及砂體組合模式，總結出河道砂體屬迷宮式儲層地質模型，這是精細油藏描述及剩餘油分佈研究的最重要基礎。
  5. To validate the formulated transition element for the calculation of the hot - spot stress and stress concentration factor in the welded components by experimental results, the stress concentration factor of the experimental welded specimens carried out in the research group is calculated by using the developed plane - transition element. the calculated stress concentration factor in the two types of tested welding components agrees well with that obtained from the experimental result. and the calculated result on the tendency of hot - spot stresses agrees well with that from the measured result

    為了驗證文中構造的過渡單元模型用於分析焊接節點附近的應力集中問題的正確性和有效性，進一步又對過渡單元模型進行實驗結果驗證，採用平面過渡單元模型計算了本課題組進行的兩類焊接構件的應力集中系數，並與根據實測方法得到的應力集中系數進行了比較，計算結果與實驗測試得到的應力集中系數和相應的熱點應力變化趨勢比較吻合，為本文建立的過渡單元的實際應用提供了初步的基礎。
  6. Compared the results of fea and the data of experiment, we can analyse that the distributing of the seismic stress of polymer - geogrid reinforced material is similar to that of the static stress, but the stress values of them is different ; the seismic similar friction coefficient between the earth and reinforced material fall with the increasing of earthquake acceleration, model acceleration respond along the height of the model, etc. thirdly, according to the comparison and analysis of the model seismic fea results and model experiment data, we can find the polymer - geogrid reinforced earth seismic fea is reasonable, which is composed by earth element, contact element and reinforced material element

    通過對比有限元計算結果和試驗數據，分析得出塑料土工格柵筋材的最大動拉應力的分佈與靜拉應力的分佈沿筋材的埋深大致相同，只是應力的值大小不同；地震作用下土筋間的動似摩擦系數是隨地震加速度的增加而減小；模型沿墻高方向的加速度響應等。接著，根據模型動力有限元時程分析結果和模型試驗數據的比較分析，得出由土體單元、接觸單元和筋材單元組合的塑料土工格柵加筋土非線性動力有限元分析模式的合理性。
  7. Bluetooth operates in the global available 2. 4ghz free ism band, its topology is the piconet. it implements the wireless communication with data and voice, by the combination of circuit switching and packet switching

    藍牙使用免申請2 . 4ghzism頻段，採用微微網作為其網路的基本單元，並採用電路交換技術和分組交換技術組合，實現語音和數據的無線通信。
  8. Mode, ext3 only officially journals metadata, but it logically groups metadata and data blocks into a single unit called a transaction

    方式下， ext3隻是正式記錄元數據，而在邏輯上將元數據和數據塊分組到稱為事務的單個單元中。
  9. Presents the system established by taking variable - speed torque converter with adjustable guide blades as a pilot control unit and forming an open or closed loop feedback control system, and its outstanding advantages, such as high capacity, simplicity, reliability and good transmission efficiency owned by hydrodynamic drive, and the dynamic model developed for variable - speed torque converter with adjustable guide blades by means of theoretical analysis and regression analysis of experimental data, and concluds that the model is sophisticated and simple enough to be used as a tool for design, analysis and computer simulation of a hydrodynamic control system

    以導葉可調式液力變矩器作為控制單元組成的開環或閉環液力控制系統，具有液力傳動裝置能容大、系統簡單可靠、傳動效率較高等顯著的優點.通過理論分析和試驗數據的回歸分析方法建立了導葉可調式液力變矩器的數學模型，模型既簡單，又有足夠的工程應用精度，為液力控制系統的設計、動態分析和性能預測提供了必要的理論基礎
  10. If the data is simple enough, this could be a comma, but more complex strings are usually separated using tabs, new lines or a combination of characters not likely to be found in the record itself

    如果數據簡單，分隔符可能是逗號，但更復雜的字元串通常用製表符，換行鍵或在記錄中未出現的字元組合來分隔
  11. There is difference frequency measurement requirement for every part of pid regulating, difference between dynamic quality and static quality in response time and accuracy. according to these, it use the interrupt functions and high - speed counter of the simens s7 - 200 plc cpu226 basic unit and some peripheral circuit to measure frequency ; in software designed, the procedure frame of hydraulic - turbine governor and disperse process of parallel pid are analyzed, an improved pid algorithm is adopted to realize a pid regulation mode with variable structure and parameters ; the mechanical liquid - pressure system of the hydraulic - turbine governor is with electric - hydraulic converter unit of step motor. according to the drive character of five phase of response step motor, a variable frequency regulated voltage driver unit is designed in order to realize interface between plc and driver of step motor

    本文利用s7 - 200plc自身的特點設計了頻率測量單元，根據pid調節各個環節的特點，以及調速器動態特性、靜態特性對頻率測量的實時性和精度要求的不同，利用s7 - 200plc基本單元中內置的高速計數器以及相應的外圍放大整形、分頻電路，實現了水輪發電機組頻率的測量；在軟體上，對微機調速器的整個程序框架、並聯pid的離散化過程進行了分析，選用改進的pid演算法實現了變參數、變結構的pid調節模式；調速器的機械液壓隨動系統具有步進電機電液轉換元件，採用五相反應式步進電機，根據其驅動特性設計了變頻調壓驅動器，實現plc與步進電機驅動器之間數字介面。
  12. Then, we establish the finite element analysis models of the antenna in different structure layout, and obtain the corresponding frequencies and model shapes. finally, according to the importance of each object, we set up the model of multiple objects that aims to maximize the first natural frequency and minimize the mass. combining orthogonal experiment and variant weighting coefficient method, we formed an effective multiple objects optimized algorithm basing on the neural network and genetic algorithm

    本文首先詳細的敘述了天線結構的各組成單元，闡明了天線反射拋物面的形成原理；然後在ansys軟體環境中建立了不同結構布局下天線的有限元分析模型，分析計算了各種情況下天線的的固有頻率與振型；最後依據天線各指標的重要性，建立了以一階固有頻率最大、質量最小為目標的天線結構多目標優化設計模型，並基於神經網路和遺傳演算法，結合正交實驗和變加權系數技術，形成了一種有效的多目標優化演算法，在matlab平臺下實現了天線的結構多目標優化設計計算程序，求得了天線的最佳結構參數。
  13. This dissertation mainly introduces the key technology and innovative research of ws - dfs, such as web - based architecture, flexible component model, distributed local file storage unit, parallel access control and high efficiently organize and index for huge amount data

    本文主要論述基於web服務的分散式文件服務系統的關鍵技術及創新研究，包括體系結構、靈活的組件模型、全分佈的本地文件存儲單元、數據並發訪問控制和海量數據高效的組織和檢索等六個方面的研究成果。
  14. We study the qos strategy in wireless networks. after understanding the wireless local network based on ieee 802. 11, we point out the problem that occur when a large msdu ( mac service data unit ) is to be sent in the dcf mode in wireless lan. when a msdu is divided into several mpdus ( mac protocol date unit ), the later mpdu will service as a important role

    在此基礎上，我們研究了無線局域網中的服務質量策略，在對基於ieee802 . 11的無線局域網進行了充分了解的基礎上，提出了在無線局域網dcf方式下發送較大msdu [ 2 ] （ mac層服務數據單元）時會遇到的問題，指出當把msdu分片[ 2 ]成為一組mpdu （ mac層協議數據單元）進行發送時，隨著mpdus的不斷發送，排序靠後的mpdu將對整個msdu的發送時間產生決定性影響。
  15. In addition, the concept of scene centriod is introduced to represent video scene by averaging of all key frames inside a group of shots in the given video scene, which makes an audacious attempt for high - level video unit extraction and representation ; 4 ) according to the given sample video, shot and scene - based video retrieval methods are discussed respectively, and the evaluation pricinples are also discussed

    進而，討論了由場景中一組鏡頭的關鍵幀的質心表示場景關鍵幀，即場景質心的方法，從而為抽取高層的視頻數據單元做出了大膽的嘗試； d ）從給定樣本視頻出發，分別討論了基於鏡頭和場景的視頻檢索方法，並分析了檢索性能評價的準則。
  16. Gridserver s apis group basic computing models into classes for " tasks " fundamental work unit, " jobs " group of work units performed in parallel, and " datasets " data repositories spread across a cluster for parallel searching and querying as well as supporting classes used for task filtering, administration, and so on

    Gridserver的api將基本的計算模型按照「工作」 （基本工作單元） 、 「任務」 （并行執行的一組工作單元）和「數據集」 （遍布整個集群的數據存儲，用於并行檢索和查詢）劃分成類，同時還提供支持工作過濾、管理等的類。
  17. A stream is a uniform array of component data in which each component consists of one or more elements that represent a single entity such as position, normal, or color

    流是統一的分量數據數組，在該數組中，每個分量由表示單個實體（例如，位置、法線或顏色）的一個或多個元素組成。
  18. The upper - right cell is a column header, which can contain a field or expression by which to group the data

    右上角的單元是列標題，它可以包含作為數據分組依據的欄位或表達式。
  19. The lower - left cell is a row header, which also can contain a field or expression by which to group the data

    左下角的單元是行標題，它也可以包含作為數據分組依據的欄位或表達式。
  20. In a3790 or dpcx application program, a set of programming statements that define the contents and structure of a data unit by specifying pages, lines in pages, fields within lines, and items within fields

    在3790或分散式處理控制執行程序（ dpcx ）應用程序中，一組程序設計語句，它通過規定頁、頁中行、行中欄位、欄位中項的辦法確定數據單元的內容和結構。
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