通用常數 的英文怎麼說

中文拼音 [tōngyòngchángshǔ]
通用常數 英文
absolute constants
  • 通 : 通量詞（用於動作）
  • 用 : Ⅰ動詞1 （使用） use; employ; apply 2 （多用於否定: 需要） need 3 （敬辭: 吃; 喝） eat; drink Ⅱ名...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 通用 : be in common use; be current; apply or be used universally
  1. In order to prepare low dielectric constant glass powder, we use sio2, boracic acid etc as raw material to prepare glass powder. the result of testing is : its dielectric constant is about 4. 0, and it is suit for our experiment

    作為低介常數的玻璃粉料，採用sio2 、硼酸等為原料，通過熔融、研磨製得了玻璃粉料，其介電常數約為4 . 0 ，介質損耗為10 10 4 。
  2. Even if you initially acquired the digital cash or credit for free through a loyalty or bonus point scheme, for example, the accumulated " savings " represent value which you would doubtless wish to protect

    即使你最初是免費取得數碼現金或信用例如通過常客積分計劃或獎勵積分計劃取得，你累積的"儲蓄"始終具有價值，相信你必定想好好保護。
  3. Conventional gas constant

    通用氣體常數
  4. In recent years, plentiful and substantial fruits achieved by the lb method in simulations of hydraulics, multiphase flows, flows in porous media and heat transfer as well as magnetohydrodynamics, have revealed a broad perspective of application of this method, it will become a powerful competitor to the conventional approaches. in order to absorb the recent achievement in theory and application of the lb method, explore new ways in hydraulic computation to promote the development of practice, some work is car ried out in this thesis, as following : advances in the theory research and application, deductive process of the d2q9 model and some other commonly used models of the lb method are summarized. based on the hydrodynamic and general boundary conditions, a new joint boundary condition is presented, it integrates advantage of the two conditions above and obtains very good results in dealing with all kinds of boundaries of flow fields

    為了消化和吸收近年來lb方法在理論和應用方面的新成果，探索在水力計算方面的新途徑以促進lb方法實用化的發展，本文進行了下列研究工作：綜述了lb方法在理論研究和實際應用方面的新進展，以及d2q9模型的推導過程和其他一些常用的模型；在水動力邊界條件和通用邊界條件的基礎上提出了一種新的聯合邊界條件方法，它綜合了上述兩種邊界條件的優點，在流場的各種邊界處理中取得了非常好的效果，經過模塊化的處理以後這種邊界條件具有更好的實用性；針對均勻網格的lb方法計算效率較低的不足，提出了雙重網格的latticeboltzmann方法，通過二維poiseulle流動、后臺階流動和渠道方槽流動三個算例的模擬，證明這種方法能夠明顯地提高流場模擬的計算效率；此外，根據復雜區域流場的特徵提出了latticeboltzmann方法的分塊-耦合演算法，利用lb方法的計算特性實現塊與塊之間的數據交換，充分利用計算資源提高計算效率，通過對「 t 」型、 「十」型和「 x 」型分岔管道流場的模擬，展示了這種演算法的特徵和優點，以及它所具有的應用前景。
  5. This novel method has good operational easiness and keeps the consistency problem simpler than mre by enforcing unidirectional map between entities in different r esolutions. currently most parallel and distributed simulation system design employ different modeling methodology and tools in simulation modeling and simulation software system design

    當前大多數pads系統的模擬建模通常使用專用的模擬語言或庫來描述模擬對象的行為和關系，這樣在不同建模框架中建立的模擬模型彼此間缺乏通用性，因而可重用性也較差。
  6. But there is a main question that pvdf does not be in p phase with higher piezoelectric property, but be in other phases with lower or without piezoelectric property, thus, which can not improve distinctly piezoelectric constant d33, reduce notably dielectric spoilage ( tg5 ) and raise remarkably mechanical coupling factor ( kp ) of 0 - 3 pzt / pvdf piezoelectric composite, so these will restrict its development and application. in this paper, 0 - 3 pzt / pvdf piezoelectric composite will be prepared by room pressing - solidity, high - temperature - pressing and room - pressing techniques respectively

    由於這個壓電復合材料體系存在一個主要問題? pvdf在0 ? 3型pzt / pvdf壓電復合材料中通常不是以具有較強壓電性的相晶態形式呈現，多是以其它的相態存在，不能有效地提高0 ? 3型pzt / pvdf壓電復合材料的壓電常數d _ （ 33 ） 、降低介電損耗tg和增大機電耦合系數kp等壓電和介電性能，從而嚴重地制約它的發展和應用。
  7. The general purpose hash function algorithm library contains implementations for a series of commonly used additive and rotative string hashing algorithms in the c + + programming language

    通用哈希函數運演算法則庫包括一系列通常使用的附加的或者循環的字元竄散列法運演算法則，在c + +程序語言中。
  8. The catv charge and control system is mainly composed of the management software 、 the header data modulator and the terminal charge and control equipment. i am responsible for design catv charge and control equipment and test system. the header data modulator is used to encrypt the control single from computer and transmit it into the appointed frequency. the terminal charge and control equipment demodulate out the control single from data modulator and transmit it to the addressing control part, where the demodulated fsk single is received and well - handled by the cpu unit, decode the unauthorized signals and deliver it to the shut point, shut point make use of capability of wideband anf characteristic of shut, then the signal of illegal customer will be turn off and vice versa, the legal customer can receive the normal signal

    前端數據調制器完成對計算機輸出的控制信號加密處理，將指令碼載送到一指定頻率點。終端收費控制器解調出控制信號，送至單片機尋址控制部分。單片機尋址控制部分接收經fsk數據解調器送來的信號，送入cpu單元后，解出不授權信號，然後向關斷部分送入信號，關斷部分利用pin二極體的寬帶工作能力以及關斷特性，實現對非授權用戶或者非法用戶的信號關斷，使之不能正常收視，繳費用戶進行開通正常收視，達到控制用戶通道的管理。
  9. The general signal source, represented by function generator, is wildly used in the modern testing field

    函數發生器作為一種常用的信號源，是現代測試領域內應用最為廣泛的通用儀器之一。
  10. Focus on the method of driver usb device in labview develop environment, three ways ( i / o, cin, clf ) were discussed, and the way of using visa ( visual instrument software architecture ) to communicate with usb device was used that can easily develop instruments driver and application software and improve the applicability of instruments on various operating systems

    並重點分析了常用的labview開發環境下驅動自製數據採集卡的三種方式:直接訪問寄存器方式;調用c語言源代碼方式;調用動態連接庫函數的方式。提出了利用visa （ visualinstrumentsoftwarearchitecture ）來直接驅動usbraw設備，簡化驅動程序和虛擬儀器軟體的開發難度，提高儀器在多種操作平臺上的通用性。
  11. To air - condition temperature control system, in this paper, firstly, the mathematical model is established by using the differential equations method. though equations deducing to find the control object, which is the relationship between the rooms " temperature - time constants and control system ' s kinds of performance indexes, elucidate the effects of the big rooms " temperature - time constans to the control system. then combined with the requirements of air - condition craft to the control, it is proposed that the main question needed to be solved under the air - condition control system designing is its quickness

    本文首先針對空調溫度控制系統，建立數學模型，採用微分方程法，通過公式推導，找出空調控制對象? ?房間溫度時間常數與系統各項性能指標的關系，闡明房間溫度時間常數大對控制系統的影響，再結合空調工藝對控制的要求，提出了對空調控制系統的設計應主要解決其快速性問題。
  12. The hydro - demetallization kinetic model and the expression of catalyst deactivation function were proposed on the base of appropriate hypothesis used in common kinetic research methods and the operation data from maoming ' s residue hydrodesulfurization treatment unit ( s - rht )

    摘要依據茂名渣油加氫工業裝置（ s - rht ）的大量實測數據，通過合理的模型假定，採用常規的動力學模型研究方法，建立了渣油加氫脫金屬動力學模型和催化劑失活函數表達式。
  13. Based on the general mathematical models of multibody system dynamics such as the kinematics models of multibody dynamical systems, the ordinary differential equation models and the differential algebraic equation models of dynamics, general forms of the sensitivity equations of the systems are deduced by using direct differentiation method and adjoint variable method

    基於通用的多體機械繫統運動學數學模型，常微分方程形式的動力學數學模型、微分/代數方程形式的動力學數學模型分別採用直接微分方法、伴隨變量方法推導出了系統的狀態靈敏度方程的通用形式。對于微分/代數形式的數學模型
  14. In the second section of chapter 2, the fact that the essential interest rates of all nodes differ from each other is discussed, a non - homogeneous differential equation model of interest rate - amount of circulating fund is established, and it is proved that the sum of the weighted interest rates of each node in the financial network still remains a constant and that the difference of the instant interest rates between two nodes will finally approach the difference between their basic interest rates. in the third section of chapter 2, the differential equation model of interest rate - amount of circulating fund in an open system is studied, the laws of changes of interest rate are taken into account when fund is injected into or withdrawn from the node or when fund is injected into the network or withdrawn from the network, and the stability of equilibrium solution is proved based upon lyapunov stability theory. in the last, the equation model of interest rate - amount of circulating fund in the financial network with time delay is studied, and a necessary and sufficient condition for the existence of periodic solution is obtained to the interest rate - amount of circulating fund equation with delay

    本文第二章首先建立了封閉系統的利率?流通量微分方程模型，證明了各結點利率加權和為常數即金融市場利率均衡原理，以及各結點利率極限為整個網路平均利率；其次在各結點基本利率不相同的情況下，建立了非齊次利率?流通量微分方程模型，證明了金融網路各結點利率加權和仍是一個常數，並證明了各結點兩兩之間的即時利率之差最終將穩定地趨于其基本利率差；此外，還研究了開放金融網路利率?流通量方程模型，考慮了結點自身追加資金和提走資金的情形以及網路外部注入資金和向外部轉移資金情形下的利率變化規律，用lyapunov穩定性理論證明了模型均衡解的穩定性；最後，還研究了具有時滯的金融網路利率?流通量方程模型，並給出了具有時滯金融網路的利率流通量方程具有周期解的充要條件。
  15. ( c ) propose the scheme to implementing the coder and deoder of optical time - spreading / frequency - hopping, by assigning two orthogonal codes for one user and using these two codes to encoding 1 and 0 respectively, differential detection can be adopted. not only improves system performances in ber, but also resists the interference such as mai, and does n ' t need any control devices to evaluate the optimum decisive threshold

    通過給每個用戶指定互相關為0的兩個地址碼分別發送1和0信號以及在接收端採用差分檢測技術，避免了ook （開關鍵控）光通信系統中0不發送光脈沖和ook常規檢測方式下最佳判決門限必須根椐用戶數等外界環境而改變，從而提高了系統性能和降低了系統的復雜度。
  16. In order to ensure to process regularly the daily maintenance management, this paper is based on the theory and method of database design and the theory of pavement management system, combining the application environment and operation flow of the expressway maintenance system, bringing forward the four stages of the expressway maintenance system design which are the requirement analysis of consumers, conception framework design, logic framework design and physical framework design, scheming out an optimum database mode applied to all kinds of expressway maintenance systems, and establishing a common database application system, so that the expressway maintenance system can evaluate the pavement performance, forecast the pavement performance and make decisions of the pavement maintenance

    為了保證高速公路日常養護管理正常有序的進行，本文根據數據庫的設計原理、方法及路面管理系統原理，結合高速公路養護管理系統的實際應用環境和操作業務流程，提出了高速公路養護管理系統數據庫設計的4個階段? ?用戶實際需求分析、概念結構設計、邏輯結構設計和物理結構設計，設計出適用於各種高速公路養護管理系統最優的數據庫模式，並建立了通用的數據庫應用系統，使得養護管理系統能夠進行路面性能評價、性能預測和養護維修決策
  17. Based on them, in this thesis, the one cycle control theory was successfully applied to the detection and control of apf for the first time. an apf using a novel unified constant - frequency integration control method was presented. the method employs an integrator with reset as its core component to achieve the detection and control of distortion current for apf at the same time

    文中導出apf功率開關占空比必須滿足的控制目標方程、求出apf主電路的穩態模型、建立了通用常頻積分復位控制apf的數學模型，用簡單的模擬電路實現apf的通用常頻積分復位控制電路和通用常頻積分復位控制apf系統。
  18. The section shape of function block structure is usually very complex, and it has no universal formula to calculate and design till now. when making new die, we always design it by experience, and this may bring some inaccuracy. so, it is difficult to improve the quality of the die if only depending on experience

    功能塊結構的截面形狀一般較為復雜，對它還沒有形成一個可以通用的數學模型來計算，設計時常根據具體情況，藉助以往的設計經驗進行設計，而這也往往形成了擠出模設計的缺陷，造成了較大的修模量。
  19. We studied many methods to improve the tcp / ip in wireless environment, such as tcp / ip initial slow start algorithm, initial window and retransmission time out ( rto ) estimate. finally, we consider the round - trip time ( rtt ) with the physical layer and the transfer layer combined together. physical layer using rtt related to the channel state and transfer layer using the constant rtt, the interference between the two layers can be eliminated, and so the effectiveness of the wireless data link can be enhanced

    研究了tcp ip的慢速啟動演算法、初始窗口、重傳超時估計以及改善無線tcp ip性能的各種方法，提出了一種把物理層鏈路和傳輸層相結合處理往返時間（ rtt ）的方法：物理層鏈路採用與通道相關的動態rtt ，傳輸層採用常數rtt ，消除了兩層rtt之間的相互干擾，從而提高了無線鏈路的利用率。
  20. We give out the estimator of the constant part function g ( - ) by local linear method. using the estimator of the constant part function, we employ the local linear method to estimate coefficient function the method is called two - stage estimating method. the weak consistence, the uniform strong consistence and the asymptotic n

    我們首先對常數項函數叭? ）使用局部線性估計方法，給出了它的估計;然後對系數函數腸（ . ） （ ， = l ， … ， p ） ，通過應用常數項函數的估計，使用局部線性估計方法給出其估計
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