constant difference 中文意思是什麼

constant difference 解釋
不變的, 恆定的
  • constant : adj 1 恆定不變的，固定的，穩定的，恆久的；繼續不斷的。2 不屈不撓的，堅韌的。3 忠實的，有節操的。n...
  • difference : n. 1. 差異，差別。2. 不和，爭論。3. 【數學】差，差額。4. 【邏輯學】特殊性。vt. 〈罕用語〉區別，使有差別。
  1. And the explicit finite difference method, the combining method of the central difference method and newmark s constant average acceleration method, and the transmitting boundary are used. by comparing the acceleration determined by the several methods of the displacements or velocities, a computing method of acceleration employed the one side difference of velocity is more practicality in this research. corresponding to normal incidence of the body waves, p waves or svwaves, and rayleigh surface waves, two two - dimensional finite difference programs are compiled to compu te the dynamic response of two - phase media

    以土力學模型為基礎，利用以土骨架和孔隙流體的四個位移為基本未知量的數值方法去模擬二維飽水介質中的地震波傳播，採用了顯式差分方法（中心差分法和newmark常平均加速度法結合）和透射邊界，通過比較利用幾種差分格式求解的加速度結果，發現一種用速度單邊差分求解加速度的方法在本文研究中較為實用，分別編制了體波（ p波或sv波） 、 rayleigh面波輸入時求解兩相介質動力響應的兩個二維數值分析程序。
  2. We present existence theorem for pseudo almost periodic solutions with piecewise constant argument by means of unique decomposite character and for pseudo almost periodic sequence solutions of relevent difference equations

    摘要利用偽概周期函數唯一分解性質，研究相關差分方程的偽概周期序列解，並以此為工具得出一類帶逐段常變量微分方程偽概周期解的存在唯一性。
  3. In adding - acid system : the resistivities of different lithotypes " cp tend towards being constant and equal when weight percentage of aniline exceeds 50 % ; because of the structure difference of different lithotypes, the polymerizing places and processes are different ; the resistivities of vituain / pan and fusain / pan reach the lowest point respectively when ( ntloisiog / an is 0. 6, 1. 0 ; the resistivities of cp decline fast and tend towards being constant along with the reduction of diameter of coal. in not adding - acid system : the resistivities of different lithotypes ' cp decline evenly ; it is found on the crossed experiment of cp, that ( nflsaog / an mole proportion is the most important factor to influence output ratio of cp and the weight percentage of aniline is the most important factor to influence resistivities of cp. according to the result of the crossed experiment of cp

    在有外加酸體系中：苯胺百分含量大於50時，不同煤巖組分的電阻率趨于恆定和一致；由於不同煤巖組分結構上的差異，導致苯胺聚合場所和聚合過程的不同；當過硫酸銨/苯胺摩爾比為0 . 6 ， 1 . 0時，鏡煤-聚苯胺導電材料電阻率和絲炭-聚苯胺導電材料的電阻率分別達到最低值；在無外加酸體系中：不同煤巖組分/聚苯胺導電材料的電阻率隨著聚合時間的增加而均勻下降，並在8小時左右達到恆定；在對絲炭-聚苯胺導電材料進行的正交試驗中發現：過硫酸銨/苯胺摩爾比對產率的影響最大，苯胺重量百分比對產率影響最小，而對產物電阻率影響最大的是苯胺重量百分比。
  4. Time difference in quarter hours between local time ( as expressed in the first 13 octets ) and utc ( universal time constant ) time ( 00 - 48 )

    當地時間與utc時間的差值（單位是1 / 4小時） ，咱們中國的是東八區， 8 * 4 = 32個四分之一小時， +號表示比格林威治時間晚。
  5. While two ( or more ) electromagnetic waves of the same frequency, same direction of vibration, same phase or constant phase difference superpose in space, the amplitude of composite wave is vector sum of the amplitude of each wave

    由兩個（或兩個以上）頻率、振動方向相同、相位相同或相位差恆定的電磁波在空間疊加時，合成波振幅為各個波的振幅的矢量和。
  6. 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。
  7. The paper proceeds from the transient equation for voltage and torque, analyze the electromechanic time constant of permanent - magnet dc servomotors based on the theory, and compare with the several testing methods which are used normal in the engineering, point out the difference and applying area also for the testing error which is led to possibly

    摘要為了準確評價伺服電動機的動態性能指標，從電機的電壓、轉矩平衡方程式出發，在理論上對永磁直流伺服電動機的時間常數進行了分析探討，並對工程實際中常用的幾種測試方法進行分析和比較，指出其差別和適用范圍以及可能造成的測試誤差。
  8. A formula to solve the initial value problem of homogeneous linear differential equations with constant coefficients is given and a formula to solve the homogeneous linear difference equations with constant coefficients under certain conditions is derived

    摘要給出了常系數齊次線性微分方程組初值問題的一個求解公式，並由此推出常系數齊次線性差分方程組在給定的初始條件下的一個求解公式。
  9. A source capable of maintaining a constant protential difference between its terminals is necessary.

    需要有一個能在其兩個接線柱之間保持恆定的電源。
  10. Various previous methods after the loading is constant are summarized and classified into two categories : semi - math methods and pure - math methods, the common and difference among these methods is discussed. then, by analyzing the characteristics of the process of the foundation settlement, the model for predicting foundation settlement based on " law of massaction " is put forward. this paper relies on the research of the section of the soft foundation of the shen zhen bay

    本文總結了以往荷載穩定后的沉降預測方法，將其劃分為半數學方法與純數學方法，尋找各預測方法相互之間的聯系;其次區別于傳統沉降預測方法的研究途徑，從沉降過程的發展特徵出發，根據描述物理化學反應過程發展特徵的質量作用定律原理，探討了地基沉降預測的「質量作用定律」模型。
  11. The investigated results express that configurational entropy will increase with increasing temperature and is determined by the heat capacity difference, which is restricted within the constant value and a value inverse with temperature

    研究結論表明：聚合物的構型熵隨溫度的上升均增大，並由同一物質非晶態的熱容量與晶態的熱容量之差決定，其變化限制在熱容量差為恆定及與溫度成倒數的范圍之內。
  12. Based on the semi - vector wave equation under cylindrical coordinate system, the mode distribution and complex propagation constant in bent waveguides were computed by a finite difference method with perfectly matched layer ( pml ) boundary condition

    摘要以柱坐標下的半矢量波動方程為基礎，採用基於完美匹配層（ pml ）邊界條件的有限差分方法，對彎曲波導進行模式求解，進而得到波導彎曲引起的輻射損耗。
  13. The equation ' s forms of the hydraulic system models with elastic hammer have great difference from power system models that hydraulic system models have partial - differential equations while the power system models all are constant - coefficient differential equations

    計及彈性水擊后，水力系統模型和電力系統模型的形式有很大的差異，水力系統模型含有偏微分方程組，而電力系統模型為常微分方程組。
  14. If an electron with k state is initially in one miniband, elastic scattering will make the difference of the probability band occupation tend to zero. if electrons initially are located at a single wannier state, elastic scattering will make the difference of the probability band occupation tend to a constant which does not equal zero. the stable distribution in k space is just the same as the average distribution when no scattering

    發現彈性散射會破壞電子間的關聯，使得初始處在某一微帶上的態電子在兩微帶上的佔有幾率趨於一致；初始電子處在實空間的單個瓦尼爾態上時，最後在彈性散射的影響下兩帶佔有幾率差不為零，並且在上的穩定分佈和沒有散射時的平均分佈相同。
  15. The details of the construction and characteristics of the new finite - difference scheme are presented in this thesis, by using both the integration theorem and the taylor expansion theory. it is proved that the new approach has the second - order accuracy on the grids with axis - symmetric voronoi cells and at least has the first - order accuracy in general. according to this character of the scheme and the computational requirements of the finite - difference approach, a striping procedure is involved to decompose the velocity model into variable spatial size grids with a nearly constant tune step preserved

    本文從積分定理和taylor展開兩個角度，詳細分析了基於voronoicell的非規則網格有限差分演算法的構造過程及性質，並且在理論上證明了本文的差分方法的精度與網格形狀的關系：當voronoicell為關于節點的軸對稱圖形時，本文差分方法具有二階精度；在一般的網格上，則至少具有一階精度。
  16. 2u. s nuoxin 360 circling spray coating technology : the entire coating procedure is controlled by microcomputer to be of constant temperature an constant velocity. spry gun circles by 360 spraying powder ensuring complete atomization as well as evenness and stability of powder on plate surface after static absorption. and ultra - long process of high - temperature solidification in furnace resuls in still better performance of adhesion surface evenness and smoothness without blistering or color difference

    2美國諾信360o旋轉噴塗技術：噴塗過程全程微電腦恆溫怛速控制，噴槍360o旋轉噴射粉末塗料，保證粉末塗料完全霧化，由板面靜電吸附后均勻穩定，通過超長程的固化爐高溫固化，附著力更強，表面更均勻更平滑，無起泡無色差。
  17. We found that different level coriolis acceleration stimulation had no significant influence on the duration of the illusion but had some influence on the pattern of the illusion, the intensity of ci increased with the levels of coriolis acceleration stimulation, and no significant difference was observed on nystagmus beats, peak slow phase velocity, mean slow phase velocity, time constant of slow phase velocity decay, duration of eng among different coriolis acceleration stimulation, but the direction of eng is consistent with the pattern of ci

    結果發現：不同強度的科里奧利加速度刺激對錯覺形態具有一定影響，錯覺持續時間、錯覺強度隨科里奧利加速度的增加而增加，不同科里奧利加速度刺激下的眼震電圖，其眼震方向與錯覺形態是一致的，但無論是水平性眼震還是垂直性眼震，眼震次數、最大慢相速度、平均慢相速度。慢相速度衰減時間常數、持續時間等參數均無顯著性差別。
  18. With the equation for water vapor transfer in unsaturated soil the thesis deduces the equation for liquid water transfer, and then puts forward the coupled calculation method for water vapor and liquid water transfer together, and then build the difference calculation program to realize the coupled calculation under the one - dimension and constant - temperature condition, and put the program into practice with the experiment conditions, the calculation result tallies well with the experiment data, the facts proves the reliabilities of theory deduction and the feasibility of coupled calculation method

    最後論文結合非飽和土氣態水遷移引起的含水量變化方程，推導了液態水遷移引起的含水量變化方程，提出了非飽和土考慮氣態水和液態水混合遷移的計算方法，編制差分計算程序實現了一維恆溫條件下液態水和氣態水的禍合計算，並將程序結合試驗條件進行了應用，計算結果與試驗結果較為吻合，表明了理論推導的可靠性和禍合計算思路的可行性。
  19. Connecting to the model test, some suggestions, important for design, are put foward, for example, the chute width of intermediate outlet should be constant ; the optimum height difference of drop between intermediate outlet and surface outlet should be larger than the water depth at intermediate outlet ; and the type of drop should be changed with the characteristics of certain project

    結合試驗結果，提出中孔泄槽以等寬或微收縮為宜、表中孔最優坎高差應大於中孔水流的主流水深、跌坎形式的選擇應結合具體工程特點等建議。
  20. This paper studies and designs a variable frequency speed regulation system applied to induction motors by means of votating speed difference frequency fuzzy control. the general scheme of the system is presented. circuits and software are designed for the major parts of the system such as constant magnetic linkage control frequency converter and votating speed difference frequency fuzzy controller

    本文對異步電動機轉差頻率模糊控制變頻調速系統進行了較為詳細的研究和設計，給出了系統的總體方案。對于系統的主要組成部分? ?恆磁鏈控制變頻器和轉差頻率模糊控制器進行了設計。
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