differential velocity 中文意思是什麼

differential velocity 解釋
速度差
  • differential : adj 1 差別的，區別的；特定的。2 【數學】微分的。3 【物、機】差動的，差速的，差示的。n 1 （鐵路不...
  • velocity : n. 1. 迅速；快速。2. 速度，速率。3. 周轉率。
  1. Collisonal quantum interference ( cqi ) was observed in the intramolecular rotational energy transfer in the experiment of the static cell, and the integral interference angles were measured. to observe more precise information, the experiment in the molecular beam should be taken, from which the differential interference angle can be obtained precisely. in this paper, the theoretical model of cqi is described in an atom - diatom system in the condition of the molecular beam, based on the first - born approximation of time dependent perturbation theory, taking into accounts the anisotropic lennard - jones interaction potentials. the method of observing and measuring correctly the differential interference angle is presented. the changing tendencies of the differential interference angle with the impact parameter, velocity, and et al. are discussed

    分子內部轉動傳能的靜態池實驗觀察到了碰撞量子干涉效應（ cqi ） ，並且測得積分干涉角，為了獲得更加精確的分子內部轉動傳能的碰撞量子干涉效應信息，實驗就必須要採用分子束實驗進行.本文理論上採用各項異性相互作用勢，應用含時微擾理論的一級波恩近似，假想在分子束實驗的條件下，建立在原子-雙原子分子體系中碰撞量子干涉的理論模型.理論上推導出微分干涉角具體表達式，通過計算定性地討論了微分干涉角隨著碰撞參數、速率等的變化趨勢，同時初步探討了實驗的正確觀測途徑，得出了採用分子束進行實驗觀測的實驗方法，為進一步進行分子束實驗提供了理論基礎，對實驗的進行起到了一定的借鑒作用
  2. Measurement precision contribute to improving the security class and economic of boiler running and automatic level of whole plant. the smart measurement instrument of the boiler ’ s air flow designed in the thesis and the instrument can make the degree of accuracy get to. firstly, the thesis build the “ velocity - area ” method which is on basis of “ log - tchebycheff ” on the analyzing of basic measure method of boiler ’ s air flow. secondly, model86 averaging pitot tube was selected the right model of flow transducer which can pickoff the differential pressure and static pressure. modelc264 which made in setra system corp. u. s. a was selected as ultra low differential pressure transmitter. a good flow of boiler ’ s air was calculated by offsetting pressure and temperature. finally, numeroscope was designed with z80cpu and other chips

    精確的監測有助於提高鍋爐燃燒的安全型、經濟性，也有助於提高電廠的整體自動化水平。本文設計的智能化鍋爐風量測量裝置能夠實現對鍋爐送風的精確測量，精度可達。本文首先研究鍋爐送風矩形大管道測量理論，提出在流來流量測量測點布置基於「對數-切比雪夫」法的速度-面積法。
  3. 2. doppler frequency shifting and curve fitting differential methods for measuring velocity are analyzed and compared. the least - squares curve fitting methods based on power functions and orthogonal functions are analyzed and compared

    2 .對測量速度的兩種方法，多普勒頻移法和曲線擬合微分法作了分析和比較;對以冪函數族和以正交函數族為基底的最小二乘曲線擬合法作了對比分析。
  4. The paper points out that the reasons for displacement efficiency improving of pressure coring well are as follows : firstly, extra - high injection multiples ; secondly, extra - low critical drive ratio ; thirdly, high velocity fluid ' s big differential pressure drive during the process of coring

    得出導致礦場密閉取心井驅油效率高的原囚：一是特高的注水倍數，二是特低的臨界驅動比，三是取心過程中高黏度流體的大壓差驅動。
  5. Finally, in consideration of the characteristics of the differential balance mechanism, a more accurate virtual prototype of the mechanism is established and the simulation is carried out in the software environment of adams. the angular velocity curves of the relevant parts and the natural frequency of the mechanism are got. the results may be helpful to the improvement and the application of the mechanism

    最後，綜合考慮了輪齒嚙合剛度、搖臂軸扭轉柔性及齒輪傳動回差對差動平衡機構的影響，建立了能夠比較完整地反映該機構動態特性的虛擬樣機模型;在adams軟體環境下，對差動平衡機構的虛擬樣機模型進行了動態模擬，得出了能反映該機構動態特性的關系曲線，並確定了其固有頻率，為該機構的改進及其在月球車上的實際應用提供了參考依據。
  6. The programme logic controller is utilized to control the inverter ' s output frequency which accomplishes controlling the velocity of speed - controlling asynchronous moter. the velocity between main asynchronous moter and speed - controlling asynchronous moter is composed by way of the differential planetary gear train, the tranmission system is made to regulate velocity stepless in large scope which succeed in controlling starting progress of load

    使用可編程式控制制器對變頻器的輸出頻率進行控制，實現對調速電機轉速的控制。調速電機與主電機的轉速經差動行星輪系的速度合成，可使傳動系統在很大范圍內無級調速，實現對負載的可控起動。
  7. The paper formulates the dynamic analyses of hydraulic operating mechanism in large space, established mathematical model, presents methods of differential equation system, and corrects its parameters concerned in process of solution. after the unloaded characteristics calculation and test under real condition are developed for type lw - 252 breaker equipped with hydraulic operating mechanism, the time - displacement cures and the velocity - displacement cures are obtained

    本文對液壓機構的速度分析，用了大量的篇幅，建立了數學模型，給出了其方程組的求解方法，並對求解過程中所涉及的系數給予修正，在此基礎上對本課題研製的配液壓機構lw - 252斷路器進行了實際條件下的空載特性計算及實驗研究，獲得了斷路器的時間? ?位移曲線和速度? ?位移曲線。
  8. To ascertain how to produce differential pressure reasonably during the course of high temperature and pressure gas well testing, we must consider synthetically the following situations : both liquid in well bore and solid phase particles of mud in strata can be carried out through airflow ; we must avoid sand production out of borehole walls and make the selected differential pressure meet the demands of the testing instrument capability ; the calculation of differential pressure when no sand comes out of strata covers the calculation of strength of rock of borehole walls and airflow velocity, etc

    摘要高溫高壓氣井測試中合理生產壓差的確定需要綜合考慮使氣流能夠在井筒中攜液、返排侵入地層中的泥漿固相顆粒、避免井壁出砂、滿足測試工具性能要求等；地層不出砂壓差計算還涉及到井壁巖石的強度計算、氣流流速計算等。
  9. Then, we use a simulation method to create a large number of radar measurement values, produce a quantity of random numbers using computer software and add them to the radar measurement values, we use kallman filtering method to calculate the location, velocity and trajectory coefficient of the target at the moment of the final tracking point, and use the numerical solving method of differential equation to calculate the trajectory, the location of the hostile artillery or the impact point of its own projectiles, finally, we calculate statistically the random error of the tracking system and analyze the location accuracy

    然後採用模擬模擬方法獲得大量的雷達測量值，由計算機軟體產生大量的隨機數，加入雷達測量值中，用卡爾曼濾波法計算出最後跟蹤點時刻的目標位置、速度和彈道系數，再用微分方程數值解法計算出整個彈道軌跡、計算出敵方炮位的位置或己方炮彈的落點，最後統計出跟蹤系統的隨機誤差，分析定位精度。
  10. In theory, the noise elimination capacity is calculated by the method which the characteristic equation of noise elimination of the dissipative silencer is translated into the constant differential eguation. and the project simulates and calculates the distributing thing of interior velocity of flow by the finity element

    在理論上，採用了將阻性消聲器的消聲量特徵方程轉化為常微分方程的計算方法計算消聲量；在計算阻性消聲器的阻力損失時，運用了有限元數值模擬的方法模擬計算了簡化消聲器模型內部流場流速的分佈情況，並由此得到其動態阻力損失。
  11. 4. through our research, the whole measuring scheme is finalized for pulse - counting method with analog intervene chosen to measure distance, the differential coefficient method based on the least - squares curve fitting based on power functions chosen to measure velocity and qd optical spot location method chosen to measure angle

    4 .通過研究，最終確定了以模擬插入脈沖計數法測距，冪函數族基最小二乘曲線擬合微分法測速，四象限探測器（ qd ）光斑定位法測角的脈沖激光雷達整體測量方案。
  12. Thermal and structure character of straight reheating furnace were analyzed in csp technological process. coupling with heat conduction differential equations of the thin slab and the furnace lining, the mathemat ical model of heat transfer is established in the long one dimension furnace by using zone method for making the model of radiant heat transfer. the effect of the moving velocity and kinds of the slab on temperature distribution in the furnace is discussed based upon the solutions to the mathematical model

    通過分析csp工藝中直通式輥底加熱爐的熱工及結構特性，採用區域法建立爐內輻射換熱數學模型，與加熱爐內連鑄坯及爐襯的一維導熱方程相耦合，建立長一維直通式輥底加熱爐爐內傳熱數學模型.通過對數學模型的求解，研究分析了不同的薄板坯移動速度及鋼種對加熱爐爐內溫度分佈的影響
  13. Abstract : this article lists some notices of the measurement points and their importance in cleanrooms, content focus on ： indoor temperature measurement, humidity survey, exhaust air flow measurement, production line velocity measurement, inside and outside pure room differential pressure survey and the related test equipment for those measurement mentioned above

    本文主要介紹了潔凈室里需要注意的幾個測量點和它重要性，內容包括：室內的溫度測量、濕度測量、送風量和排風量的測量、成品生產線上的微風速測量、潔凈室內外壓差測量等，以及與之配套的測試儀器選擇方法。
  14. The resonant three - wave model and laminar - turbulent velocity profile composed are used as a model of coherent structures in. turbulent flow. the forming and variation of turbulent coherent structures in the channel are simulated by the compact differential method with high accuracy and resolution derived in this paper

    以共振三波和層-湍復合速度剖面作為湍流相干結構模型，採用文中所導出的高精度、高解析度的緊致差分方法，模擬了槽道流動在近壁區域湍流相干結構的形成和變化。
  15. The differential equation of flexible rotor operating unsteadily is also derived and solved, its transient dynamics responses under different accelerations are obtained with simulink ' s program. the amplitude, phases and advancing angular velocity of response along with rotational speed and time under different accelerations are discussed. the responding conclusions have been reached

    同時，建立了單盤轉子的瞬態運動方程，用simulink程序求解了所建立的瞬態方程，模擬得到了它在不同加速度下的瞬態動力響應，並就不同加速度下的振幅、相位、進動角速度隨時間和隨轉速的響應分別作了較詳細的討論，得出了相應的結論。
  16. Then the system can use automatic constraint violation stabilization method for differential / algebraic equations to get state, displacement, velocity, acceleration of multibody system in different time points under external force

    該系統採用絕對坐標方法自動建立多體系統動力學方程，其形式為微分代數混合方程，即euler - lagrange方程。利用約束違約自動穩定方法求得多體系統在外力的作用下姿態、位移、速度、加速度。
  17. Firstly on the basis of twin shear unified strength theory and spherical cavity expand theory it is established the expression about target defense force, given the equations of rod projectile penetrate and impact velocities on ceramic / composite target under the same pressure and verified through the experiment. secondly the analysis model of ceramic / grfp / steel composite multi - layer target penetrate depth employing above differential equation of target defense force, penetrate velocity and rod velocity. there are two team of experiments which testify separately the penetrate depth and effect with different length - to - diameter

    首先，基於雙剪統一強度理論和球型空穴膨脹理論建立了靶板抗力表達式，並通過壓力相等條件給出了桿式彈侵徹陶瓷復合靶板的侵徹速度與撞擊速度的表達式，最後用試驗進行了驗證；其次，利用上面的靶板抗力表達式、侵徹速度、彈桿速度的微分方程，建立了陶瓷/玻璃鋼/鋼板復合多層靶板侵徹深度分析模型，分兩組試驗對侵徹深度、不同長徑比的侵徹效果進行了驗證;最後，建立了桿式彈垂直侵徹陶瓷多層復合靶板的工程模型，給出了預測靶板抗彈性的k 。
  18. First, the dynamics equation of multi - system is derived by first kind of lagrange equation and also the constrain equations of velocity are obtained, the final expression of the dynamics equation is hybrid one of algebra and differential

    首先，本文利用第一類lagrange方程建立了柔性多體系統的動力學方程，並建立了速度意義下的約束方程，方程最終表現形式為微分/代數混合方程組。
  19. Second, engine ' s partial velocity characteristics model and universal characteristics model are built the throttle opening is considered as an essential factor to build the model for reflecting the actual working performance of engine. the situation of the throttle opening change is studied, and a simulation method is given to use torque curved surface and vehicle dynamics equation on base of differential approach method. engine test software is developed for the engine no - load test, variable throttle opening test and throttle step change test

    其次，建立了發動機的部分速度特性模型和萬有特性模型；為了更好的反映發動機的實際工作特性，將油門開度作為一個重要參數參與建模，並對發動機變油門的情況進行了研究；結合轉矩曲面和整車動力學方程，採用微區間逼近法確定了發動機變油門過程模擬方法；開發了發動機試驗測控軟體，利用該軟體進行了發動機空載響應試驗、發動機不同油門開度試驗和油門階躍變化試驗，並對實際試驗數據和數學模型計算數據進行對比；在vc + +平臺上開發了發動機特性模擬模塊，在系統中用軟體實現了變油門控制發動機特性的功能。
  20. Differential equations for characteristic curves, velocity curves and slowness curves are given and the analytical expressions for wave fronts in orthotropic porous media are also obtained. the wave fronts in anisotropic fluid - saturated porous media are discussed in detail. in chapter 3, the plane wave propagation in orthotropic fluid - saturated porous media is researched according to biot ' s theory and the concept of dynamic permeability

    給出了正交各向異性液飽和多孔介質中彈性波的特徵曲面，速度曲面以及慢曲面的微分方程，並給出了正交各向異性液飽和多孔介質中應力波波陣面的解析表達式，對不同含液飽和多孔介質中應力波傳播的波陣面進行了研究。
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