useful transmission 中文意思是什麼

useful transmission 解釋
有用透射
  • useful : adj. 1. 有用的，有益的，有效的，有幫助的。2. 〈俚語〉值得稱贊的，精通…的 （at）。adv. -ly ,-ness n.
  • transmission : n 遞送；傳遞；傳達；傳染；移轉；【機械工程】傳動；傳遞；變速器；聯動機件；【無線電】傳送；發射；...
  1. Computational flow imaging ( cfi ) uses theoretical predictions of the interaction and transmission of optical waves through theoretical flowfield to generate digital pictures that simulate real observations. it was used to construct flow visualization corresponding to shadowgraph, schlieren, interferometric and planar laser induced fluorescence ( plif ) images. by providing a better insight into the flow physics and cfd code behavior, cfi is proving to be extremely useful to experimentally validate cfd codes

    計算光學流動顯示技術（ computationalflowimaging - cfi ）就是把數值計算（ cfd ）獲得的流場中的物理場，經過與實驗相同的計算光學（全息干涉、紋影、陰影、平面激光誘導熒光）的過程轉換為所需的各個方向與試驗流動顯示圖像相對應的計算流動圖像。
  2. Applying relative arithmetic to all kinds of faults and calculating off - line, we can master time - distance relation chart for all kinds of faults. computation indicates : when transmission lines occur faults, the data window of protection algorithm consisting of prefault and postfault data at the same time has important significance. the following methods are useful to achieve the inverse time characteristic : calculating impedance by using flourier in a full cycle, calculating work voltage by using fault component, calculating the torque created by a phase comparator or a magnitude comparator

    實際的計算表明：輸電線路發生故障后，用故障前後的數據同時充滿保護演算法的數據窗，對于快速切除近區故障具有很重要的意義；同時利用故障前後的數據，下述方法可以比較好地實現距離保護的反時限特性：直接用全周傅里葉演算法進行阻抗計算；採用工頻變化量阻抗繼電器進行工作電壓的計算；採用轉矩的思想進行轉矩的計算。
  3. The text computes the eigenvalue of double ridged waveguide, single ridged waveguide and unsymmetry ridged waveguide, transmission of three kinds of ridged waveguides with ridge on the narrow wall are solved for and the useful curves on cutoff wavelength, bandwidth and field pattern are presented

    編程計算了雙脊、單脊和不對稱脊波導的特徵值，求解了三種脊位於窄邊的脊波導的傳輸特性，並給出了截止波長和單模帶寬曲線以及場結構變化。
  4. In this article, at first, the dispersion conception and generation reason are explained, and the dispersion influences that are brought about in the analog and digital signal transmission in optical fiber communication are accounted for. next, the dispersion theory of optical fiber is discussed in detail and several useful technologies of dispersion compensation are introduced

    論文首先從光纖色散的概念和起因入手，然後從數字和模擬信號傳輸兩個方面，說明了光纖色散對通信的影響，對光纖色散理論作了詳細地闡述和分析，並介紹了幾種已實用的色散補償技術。
  5. A new type roller is first put forward in this paper ? ? rolling screw roller. there is something improved and enhanced on the basis of traditional roller. the rolling screw roller can absorb shocks more efficiently, can reduce noise and vibration during transmission, and extended roller useful life, thus extending the useful life of the chain

    卷制螺旋滾子不同於以往傳統滾子是通過冷擠壓成型，它是通過絲材卷製成型的，因此，它周身遍布縫隙，整個縫隙呈螺旋狀，在工作中，可以依靠這些縫隙吸收沖擊能，減少高速多沖對滾子造成的傷害。
  6. In the designing of priority for the transmission ratio, the usage of gear ' s attest on transmission ration should be considered ; the average value is set as the evolution aim of the loss of driving power and the useful effectiveness. a simplified fuel - consumed economically model is used to simulate the fuel consumption while the automobile is in motion

    在變速器傳動比優化設計中考慮檔位使用率對變速器傳動比的影響，採用驅動功率損失率和有效效率利用率的加權平均值作為評價指標，用參數樣條函數模擬車速狀態下的燃油消耗量，提出了按變速器傳動比的使用率來確定汽車的加速和等速的比例，並將其作為實際工況來確定汽車的實際燃油消耗率。
  7. To overcome the second, the transmission needs to include a gearbox providing a range of different ratios of input to output speed, enabling the engine ' s speed to be maintained within the useful range of torque output over a more or less wide range of vehicle speeds

    對于第二個問題，可利用變速箱來安排不同的輸入輸出比，使發動機保持一定的轉速，以便提供保持車輛速度的有效扭矩輸出。
  8. It reframes the traceback problem as a polynomial reconstruction problem, and uses techniques from algebraic coding theory to provide robust methods of transmission and restriction. the scheme is a new solution to the traceback problem during a dos attack ; the honeypot for ddos, which is a tool of traceback, lures the attacker to believe that he successfully compromised a slave for his needs, convincingly simulating the architecture of a potential ddos attack ; the source - based approach to ddos defense, which is a useful adjunt to traceback systems, deploys a ddos defense system at source - end networks. attacks are detected by monitoring two - way traffic flows, and the attacks originating from source networks are stopped by rate - limiting ; the routing mechanism based on pushback treats ddos attacks as a congestion - control problem

    最後，就有關ddos攻擊反向追蹤問題，從四個方面對其解決方案進行了研究：在分析比較幾種反向追蹤演算法的基礎上，著重研究了代數方法編碼反向追蹤信息的方案，該方案把追蹤重構問題當作多項式重構問題，使用代數編碼理論技術提供魯棒的傳送和重構方法，是dos攻擊過程中的反向追蹤問題的一種新的解決方法； ddos陷阱作為反向追蹤的工具，引誘攻擊者相信自己成功與所需的傀儡主機通話，令人信服地模擬出潛在ddos攻擊體系結構；基於源的ddos防禦方法作為反向追蹤有用的補充，將防禦系統部署在源網路，通過監控雙向流量檢測攻擊和限制速率終止來自源的攻擊；基於向後倒推的防禦ddos的路由機制把ddos攻擊看作擁塞控制問題，添加功能到每個路由器來檢測並優先丟棄可能屬于攻擊的包，通過向後倒推上級路由器也得到通知而把這樣的包丟棄。
  9. It can be predicated that the study results are useful to the design of worm gear transmission and the development of new - type lubricants

    本文的研究結果對蝸桿傳動的摩擦學設計及新型潤滑油的開發具有實際指導意義。
  10. These sensors make up of a network for signal detection, muti - step transmission is used to transmit the signal, and self - examination is a useful function for each unit. 2

    三種傳感器在一定范圍內組成一個探測網路，網路中的各探測單元利用自行設計的多級傳輸的方法傳遞信息，解決了傳輸中的編碼及時序問題，設計了具體電路。
  11. On - board processing ( obp ) is an important direction in satellite communications, where on - board conversion from fdma to tdm is very useful in raising channel efficiency and decreasing cost of earth stations. basing on extensive research of the fdma ? dm conversion, this thesis proposes a new way for such conversion, i. e. fdma ? wtdm conversion, which is based on a china invention patent ? a time division multiplexing transmission technique for band - limited signals

    星上處理是衛星通信技術發展的重要方向，其中星上頻分多址至時分復用（ fdma - tdm ）多址/復用方式的轉換是一個研究熱點，因為它能用於構成一種通道利用率很高、地面站成本很低的fdma / tdm體制的衛星通信系統。
  12. By the support of national nature science foundation, some key problems of cvt were investigated, and some useful results were obtained as follows : ( 1 ) the relations between metal - belt misalignment in axial direction and transmission parameters were studied. by designing curved generating line pulley or adjusting the axial displacement of pulley, the degree of misalignment of the metal belt was decreaed

    本文在國家自然科學基金重點項目（編號： 59835160 ） ，國家教委重點項目（教技司（ 98 ） 121號） ，重慶市科委攻關等項目的資助下，對cvt傳動的若干關鍵問題進行了研究，本文的工作為cvt傳動的研究、應用和開發奠定了基礎。
  13. First, we introduce the basic theory, which is useful to density measurement, namely, transmission - line theory, its content consist of transmission - line equivalent circuit 、 smith chart 、 impedance matching and microwave network technology. the on - line density measurement technology with microwave has been narrated as a key part

    首先，分析了微波密度在線測量技術的理論基礎- -傳輸線理論，其內容包括將用於諧振腔設計的傳輸線等效電路、施密斯圓圖以及阻抗匹配和微波網路等多方面的技術。
  14. In this paper, the method of in - bore abnormal phenomenon remote detecting is presented. considering of the multi - channel transient signals automatic acquisition, a project of pcm signal hardwire transmission data automatic acquire system is put forward. in this system, a pcm demodulate board is designed, it can decode the pcm code string which contain the information of the multi - channel transient signals, it also can catch the useful data automatically, and transmit these data to upper pc by rs485

    在該系統中，為了能夠解調出包含多路動態信號數據的高碼速率pcm信號，設計並製作了一種適用的pcm解調板，能夠從pcm碼流中恢復出位時鐘信號，從而與發送端保持位同步和幀同步，從而對pcm碼流可靠地解調、緩存，並能根據計算機設定的觸發條件自動地捕獲多路信號的有效段，然後利用rs485總線將這些數據可靠地遠傳至計算機以供顯示、分析和保存。
  15. Based on the study of wavelet analysis theories and on the analysis of gear transmission vibration, continuous wavelet transform multi - resolution analysis and wavelet packet decomposition are respectively studied and applied in extracting the feature vectors of transmission gear extraction methods, then these three feature extraction methods are compared and useful conclusions yield

    本文應用小波分析方法，針對變速箱齒輪運行過程中的振動信號的特點，研究了基於連續小波變換、小波分析的多分辨分析和小波包分解的變速箱齒輪振動信號的特徵向量提取方法，並將這些方法進行比較，得到了有用的結論。
  16. Secondly, uses uml to build a general and useful model for h. 323 stack, and divides the stack into several modules under the principle of ooa, and realizes the stack programming with oop language on the base of a cross - platform classes - pwlib. subsequently, fluctuation in video transmission is deeply analyzed and a useful solution is presented. finally, a simulation terminal software is developed on the base of h. 323 stack, then the stack is tested with unit testing and systemic testing

    本文首先對h . 323標準進行了概括性的介紹，包括它所定義的實體、協議棧、通信過程；用uml和面向對象的思想對h . 323協議棧進行建模；實現了h . 323協議棧的模塊化劃分，並用跨平臺的pwlib類庫實現了h . 323協議棧；隨后對會議電視中視頻通信數據網路抖動的消除方法做了深入的研究，並在此基礎上給出了一種有效的解決方案；最後，基於h . 323協議棧，開發了h . 323模擬終端，並用單元測試、系統測試的方法對協議棧進行了嚴格的測試。
  17. Mems switches based on metal - metal contact are useful in a variety of power management information processing and communication systems because their on resistance is lower than that of semiconductor switches and their off resistance and transmission frequency are higher than that of semiconductor switches

    在自動測試、控制系統、通信系統的信號通路等領域有著廣泛應用潛力，同時， mems開關是微機械技術中的一類有代表性的結構，是很多微機械器件的基礎。
  18. It is shown that, by adopting supermirror guides with m = 2 instead of 58ni or natural ni guides, the transmission efficiency could be increased by the factor of 1. 3 ~ 1. 7, and the length of direct sight of the curved guides could be shorten greatly, which is useful for arranging shielding

    研究表明，採用m = 2的超鏡導管較~ （ 58 ） ni導管或ni導管可以提高傳輸效率1 . 3 2 . 7倍，並使彎導管的直視長度變短，利於防護屏蔽安排。
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