通道最小化 的英文怎麼說

中文拼音 [tōngdàozuìxiǎohuà]
通道最小化 英文
channel minimum
  • 通 : 通量詞（用於動作）
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  • 最 : 副詞（表示某種屬性超過所有同類的人或事物） most; best; worst; first; very; least; above all; -est
  • 小 : Ⅰ形容詞1 （體積、面積、數量、強度等不大） small; little; petty; minor 2 （年紀小的; 年幼的） youn...
  • 通道 : thoroughfare; passageway; pass; enterclose; gallery; drong; tunnel; avenue; alure; way; row; key ...
  1. Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece

    將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義
  2. Chemical fume hoods shall be of air foil design with 45 degree sloped sections on the sides and top of the hood opening to insure maximum containment and minimum eddying of air currents

    化學通風櫃應採用風道設計，側面成45度坡度，罩頂開口，以確保抽氣量最大、空氣渦流最小。
  3. Minimizing the busyness of the desktop makes kde easier on the channel bandwidth

    使桌面的繁忙程度最小化可使kde在通道帶寬上變得更寬松。
  4. Eight trapezoid labyrinth flow - channels are designed through modification to the cell dimension and the number of flow cells based on the parameterized structural design. integral emitter prototypes combining exterior hull and exterior flow - channel are built using rapid prototyping technique, and structural dimension of those flow - channel are measured by optical microscope, the measuring results showed that the design can completely meet the requirement of emitter accuracy

    文中以參數化的設計思想，通過改變梯形迷宮流道單元尺寸和單元數設計了8種梯形迷宮流道，採用快速成形技術製作出外管與內迷宮流道一體化的滴頭原型；利用最小標注尺寸為50nm的光學顯微系統對滴頭流道結構尺寸進行了測量，分析結果顯示流道尺寸精度完全滿足滴頭的製作要求。
  5. Of the currently available coolers for electronic products with a high heat flux, microchannel heat sinks have been proved to be able to provide the best heat transfer performance and are one of the most promising coolers. the manifold microchannel ( mmc ) heat sink has many advantages such as low thermal resistance, compact structure, little amount of coolant, low flow rate, uniform temperature distribution along the flow direction and many others, so it is able to provide the best heat transfer performance : lowering the maxmal temperature and the temperature difference

    在目前高熱通量電子產品冷卻器中，微通道熱沉已被證實是傳熱性能最佳且最具應用潛力的冷卻方式之一，而歧管式微通道熱沉因具有低熱阻、結構緊湊、所需冷卻液量小、沿流動方向溫度分佈均勻等優點則成為減小電子元器件換熱表面最高溫度、降低溫度變化的一種有效方法。
  6. With the using of microsoft visual basic 6. 0, a multimedia computer - aided design system of small type pumping irrigation district is developed in this paper. provided with the live multimedia messages as well as a good man - machine conversation mechanism, this system can help the user to finish the planning of an pumping irrigated area such as the layout of canal system, the selection of pump models, the establishment of the irrigation program, the calculating of canals " parameters, the estimate of the project magnitude, the selection of the field constructions, the economic analysis of the project, the output of results, etc, a new oo ( object oriented ) programming method is adopted in this system, various softwares are integrated in this systems as well by the " automation " technic provided by vb, in addition, the multimedia technic is applied to this system for the first time, it makes the system easy to ope rate. as for the optimization of the canals " section, a new optimization method is adopted based on the existing theories about the canals " section, and in this way, with the purpose of minimizing the project ' s investment as well as a stalized canal, limited by the longituding slope, the canals " best feasible parameters can be deduced. furthermore, a integral method to reckon the earth work is developed in this paper, by this way, the estimate precision of the earthwork is enhanced notably. this paper includes the particular illumination for the developing procedure of each systems " segment, and in the end, the directions of the system are demonstrated in a sample area which lies in the zhaija village, taizhou city, jiangsu province, the running results showed that the initial purposes are achieved effectively, and it has a preferable practicability

    在渠道縱橫斷面優化方面，本文在利用已經比較成熟的縱橫斷面優化理論的基礎上，提出以工程總費用最小為目標函數，以渠道縱坡i為控制變量，以渠道不沖不淤流速及灌區允許地面比降為約束條件，通過縱橫斷面聯動優化的方法得到渠道的最佳工程可行的斷面參數。另外，針對部分地區的取土困難的狀況，本文採用積分法計算渠道工程土方量，從而大大提高了土方量的估算精度，有助於準確控制工程投資規模及資金投向。本文詳細闡述了該系統所採用的編程方法、系統構成、系統各組成模塊的開發過程以及灌區規劃所採用的優化方法及原理，最後應用本系統對泰州市翟家村機電灌區進行規劃設計，運行結果證明其操作比較簡便，界面友好，運行速度快，規劃成果合理，基本達到了系統預定的要求，具備較強的實用性。
  7. Numerical results show that the ber performances of ideal mrc are the lower bounds on the ber performances of non - ideal mrc and deteriorate as the maximum doppler frequency increases or the snr of channel estimate decreases

    數值分析結果表明，非理想通道估計下最大比合併的誤碼率性能是以理想通道估計的結果為下界，並隨著最大多普勒頻移的增加或通道估計信噪比的減小而逐漸劣化。
  8. The phylogenetic tree of the potassium channel gene suggests that muntiacus crinifrons is original, and the basal split separates muntiacus and elaphodus. within the genus muntiacus, crinifrons is more closely related to muntjak, with reevesi as its sister species. in the other genus there is only one species elaphodus cephalophus

    根據鉀離子通道蛋白基因的第4內含子和第5外顯子序列構建的進化樹顯示：黑麂比較原始，首先與赤麂聚合，再與小麂聚合，最後與毛冠鹿屬的毛冠鹿聚合。
  9. In this thesis, we subsequently introduce the basic concepts of wavelet transform, especially the pyramidal algorithm and its fast realization - lifting scheme ; this scheme can decrease the time and space complexity of wavelet transform greatly. wavelet transform, the most perfect mathematical tool of signal processing theory, makes great success in the field of data compression. ezw and spiht are the milestones of wavelet image coding on the noiseless channels, and jpeg2000 adopts the ebcot algorithm

    嵌入式零樹小波編碼（ embeddedzerotreewavelets ）和多級樹集合分裂演算法（ setpartitioninginhierarchicaltrees ）都是迄今為止最為優秀的理想通道情形下的小波編碼方案：而jpeg2000靜態圖像壓縮國際標準採用的是嵌入式碼流優化截斷塊式編碼演算法（ embeddedblockcodingwithoptimizedtruncationoftheembeddedbit - streams ） 。
  10. The initialization method to achieve different equalizer delay local minimum is proposed for btea and se. comparison study using several uwac with different zero locations is made to demonstrate the equivalent of different initialization method for least mean square ( lms ) algorithm, btea, se and cma

    盡管常數模盲均衡演算法的初始化仍然是一個公認的未能解決的問題，但本文通過幾條不同零點位置的水聲通道，對比研究了自適應最小均方誤差演算法、倒三譜演算法、超指數演算法和常數模演算法的不同權向量初始化的等效性。
  11. The writer synthesize the technology of computer, wireless data communication, automatic control, ect., based in the cosideration of update communication technology according with the traditional industrial, implement a data transmission channel using gsm short message platform, which can meet the requirements of monitoring, dispersing and non - watching of the monitoring collection points, it is also a monitoring collection system with the features of wide covering by net, non - schedueld and unfixed monitoring, and it has the strong points of low investment and low management cost as well. this system has advantages compared with other systems that should meet the requirements as dispered locations of monitoring collection, wide covering, unfixing monitoring, non - strict demand for real - time

    基於將最新通訊技術融合到傳統產業中的考慮，綜合計算機、無線數據通訊、自動化控制等技術，作者成功實現了以gsm短消息平臺作為一種數據傳輸通道，適合監控採集點移動、分散、無人值守，具有網路覆蓋面大、可不定時動態監控特點的無線監控與數據採集系統，該系統具有用戶投資小、運營費用少的優點，對于解決監控採集點分散、覆蓋面廣、監控點移動、實時性要求較低的監控與數據採集任務具有無可比擬的優勢。
  12. Linux has been more and more widely used today, but the secure degree of linux is low, so in this paper, we produce a linux - compatible secure operating system, named slinux. its design object is in accordance with the requirements of the fourth level, i. e. structured protection level, of gb17859. for this purpose, we introduce such mechanism, as identification & authentication, mac, least privilege manage, trusted path, password management. object reuse, covert and channel analysis. furthermore, we have some innovation, introduce the mechanism of network security and audit

    本論文的研究目的是對linux進行安全增強，設計一個新的安全操作系統，即slinux安全操作系統，其設計目標是滿足gb17859第四級《結構化保護級》的需求，為此我們在原有linux操作系統的基礎上引入了標識與鑒別機制， mac機制，最小特權管理機制，可信通路機制，密碼處理機制，客體重用機制以及隱通道分析機制，同時還進行了創新，引入了網路安全保護機制和審計機制。
  13. ( 3 ) for the wireless channels subject to several types of fading existing in different time scales, the dynamics of channel conditions are decoupled into two random processes with different mathematic properties in different time scales. two algorithms in this scheme are proposed to dealing with each time scale : the resource optimizer allocates the resource to maximize the total revenue with price fairness and provide qos guarantees to applications, and the slot scheduler exploits the time variability of

    （ 3 ）針對無線通道衰落的多時間尺度特性，將通道條件snr分解到不同時間尺度上，在不同時間尺度上針對不同的衰落特性來設計不同的演算法，完成不同的任務：在大時間尺度（幀）上進行資源分配，面向應用提供qos保證，保持應用間price公平性的情況下，尋求系統總收益utility的最大化；在小時間尺度（時隙）上進行時隙調度，利用各用戶通道容量的時變性，使各用戶獲得比平均通道條件情況下更高的吞吐量。
  14. With criterion of minimized average energy and criterion of maximized minimum euclidean distance as the basic policies, we determined the optimization mechanism of star - qam constellation in ofdm system with fading channel and using quasi - coherentand demodulation

    我們以平均能量最小以及最小歐氏距離最大為原則，確定了在衰落通道下ofdm系統中採用準相干解調時，星型qam調制星座圖優化的方法。
  15. The results show that ( 1 ) the " prediction & cancellation " method can successfully smooth the reverberation and sharpen edges of the echo, so may detect echoes which power are great than the reverberation background by odb in one channel, ( 2 ) the scaled probabilities method can effectually separate a echo which power is great than the background by 6db, while the reverberation is cancelled dr astically

    果。計算結果表明， 「預測一抵消」演算法對混響有平滑作用，對回波則有突出信號邊緣的作用，單通道情況下的最小可檢測信號干擾背景功率比約為odb 。概率凈化演算法在信號干擾背景功率比大於6db的情況下能有效分離回波、抑制混響。
  16. Aerosolized medications maximize clinical benefit by targeting the airways and minimize side effects by reducing ( though not eliminating ) systemic exposure

    霧化器給藥通過氣道給藥達到最大的臨床利益和通過減低（而不是消除）全身性暴露最小的副反應。
  17. The signal ' s energy is made unitary by whiten before detection in order to simplify the expression of kurtosis. after that we also make use of the advantage of subspace separation to reduce the rank of the signal. thirdly, in order to suppress the effect of time various channel, the adaptive signal processing techniques are studied and an improved adaptive method based on lms ( least mean square ) is proposed

    為了能更好的跟蹤通道的變化，論文還研究了自適應信號處理的方法，並針對最小均方誤差的方法進行了改進，改進后的方法在收斂速度比傳統的最小均方誤差方法有很大改進，並且和傳統方法相比它還有收斂速度對收斂步長不敏感的優點。
  18. The number of the channels was chosen, both the relationship between the channel wide and the minimum screen area covered by the pool and the relationship between the location of the pool and the covered screen area were presented by analyzing the screen area covered by the liquid pool under the worst operating condition

    對通道式表面張力貯箱提出了系統的設計方法，包括篩網面積分析，得出不同加速度水平下的設計方案；通過通道壓力網路計算，得出最差工況下，各管道流量、壓降、篩網壓降，提出了以最小剩餘質量為目標的優化設計方法。
  19. In the presence of impulsive noise, the two received signals are combinated, so the estimated impulse response of the channel is the eigenvector of its covariation matrix corresponding to the smallest eigenvalue, which can be realized adaptively using generalization of the normalized least mean - norm ( generalized nlmp ) algorithm

    該演算法在脈沖噪聲環境下，組合兩個接收信號，使其共變矩陣最小特徵值對應的特徵向量為通道的估計，並基於廣義歸一化最小平均范數（廣義nlmp ）方法自適應得到該特徵向量，從而獲得時延估計。
  20. According to the nyquist first criterion, the usual way is to use raising cosine shaping filter in real communication system. by choosing appropriate rolling off factor and determining the distribution of its characteristics between the transmitter and the receiver, the shaping, filter will minimize the nonlinear distortion, of channel

    根據奈奎斯特第一準則，在實際的通信系統中，通常的途徑是採用升餘弦滾降成形濾波器，選擇適當的滾降系數，並確定其特性在收、發兩端的分配問題，以便將通道非線性的影響最小化。
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