數值精度 的英文怎麼說

中文拼音 [shǔzhíjīngdù]
數值精度 英文
numerical precision
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 精 : Ⅰ形容詞1 （經過提煉或挑選的） refined; picked; choice 2 （完美;最好） perfect; excellent 3 （細）...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 數值 : numerical value; numerial number; figure; magnitude; value數值表 numerical tabular; 數值天氣預報 ...
  • 精度 : precision; accuracy; degree of accuracy; precision accuracy; trueness
  1. And the deficiencies are pointed out in present researches, such as highway capacity, level - of - service, influence factor of road alignments, etc. from these, it has confirmed that the thesis should be studied from rational analysis, quantitative analysis of level - of - service, impact on capacity of road alignments, setting - up simulation model, etc. the high - accuracy gps dynamic data acquisition appearance is proposed to be used for the first time to carry on the experiment of overtaking on two - lane highways, and experiment scheme is designed according to the driver ' s perceive to judge each overtaking course. based on the experiment data, it can get two important parameters of acceptant gap ? the critical gap of overtakable time headway and returnable time headway through data processing, which can offer the strong support to the research of two - lane highway capacity with qualitative and quantitative analysis. besides, the experiment methods is provided to observe overtaking ratio and to measure the

    研究中首次提出了運用高精度gps動態數據採集儀對雙車道公路上的超車行為進行觀測，設計了根據駕駛員感受度來衡量超車過程的實驗方案，並通過後期數據處理得到了超車過程中兩個重要的可接受間隙參數-可超車車頭時距和可回車車頭時距的臨界間隙值，為定性和定量分析雙車道公路通行能力提供有力的數據支持;同時，還提出了觀測超車率的實驗方法以及測量加速度干擾的實驗方案，統一了計算加速度干擾的時間統計間隔，為雙車道公路的服務水平量化研究奠定基礎;最後還簡單介紹了駕駛員問卷調查法和模擬程序中模型參數標定和驗證的數據採集方法。
  2. Optimized association rules are permitted to contain uninstantiated attributes. the optimization procedure is to determine the instantiations such that some measures of the roles are maximized. this paper tries to maximize interest to find more interesting rules. on the other hand, the approach permits the optimized association rule to contain uninstantiated numeric attributes in both the antecedence and the consequence. a naive algorithm of finding such optimized rules can be got by a straightforward extension of the algorithm for only one numeric attribute. unfortunately, that results in a poor performance. a heuristic algorithm that finds the approximate optimal rules is proposed to improve the performance. the experiments with the synthetic data sets show the advantages of interest over confidence on finding interesting rules with two attributes. the experiments with real data set show the approximate linear scalability and good accuracy of the algorithm

    優化關聯規則允許在規則中包含未初始化的屬性.優化過程就是確定對這些屬性進行初始化，使得某些度量最大化.最大化興趣度因子用來發現更加有趣的規則;另一方面，允許優化規則在前提和結果中各包含一個未初始化的數值屬性.對那些處理一個數值屬性的演算法進行直接的擴展，可以得到一個發現這種優化規則的簡單演算法.然而這種方法的性能很差，因此，為了改善性能，提出一種啟發式方法，它發現的是近似最優的規則.在人造數據集上的實驗結果表明，當優化規則包含兩個數值屬性時，優化興趣度因子得到的規則比優化可信度得到的規則更有趣.在真實數據集上的實驗結果表明，該演算法具有近似線性的可擴展性和較好的精度
  3. 3. developed simply and practical fluid network algorithm for large - scale of pipe networks, such as air - gas system and powder manufacture system. iterative computation used in this algorithm is not only astringing quickly and numerical calculating steadily but also cater the required ratio of precision and guarantee the real - time and any performance simulation of fluid network

    3 、本文對風煙系統和制粉系統等大型管網，建立了簡單實用的流體網路模型演算法，此法在迭代計算中，不僅可以快速收斂和數值計算穩定，而且滿足一定的模擬精度，較好的保證了流體網路的全工況實時模擬。
  4. The datum plane of system is made certain and its veracity is proven by experiment. the result indicate that the laser rotating check system has very high precision and sensitivity and display the check result with number

    得到的實驗數據表明：本課題研究的掃平儀檢測系統具有很高的檢測精度與靈敏度，並實現了檢測結果的數字顯示，在掃平儀的生產中具有一定的實用價值。
  5. A highly efficient numerical algorithm by using multi - grid method ( mgm ) is introduced to solve the three dimensional field distribution in the present paper. formulae of the restriction and prolongation in mgm computation is deduced, and a 3d program of mgm is accomplished, which can solve the field distributions in electron optical systems for various electrostatic lenses. the 3d field distribution in an electrostatic concentric spherical model is tested with mgm algorithm and an algorithm based on finite difference method ( fdm ) respectively. comparing these two results in view of computational efficiency and computational accuracy, it appears that mgm is superior to fdm in solving electrostatic field distribution for the electron optics problem. this paper shows that the 3d field computation using mgm greatly improves the computational efficiency of field distributions in electron optical systems and shortens the computational time

    本文將一種高效率的數值計算方法? ?多重網格法引入三維靜電場分佈的計算，多重網格法利用限制和延拓可迅速求得滿足精度要求的場分佈.研究了求解各種靜電透鏡電子光學系統三維場分佈的多重網格法程序，驗算了靜電同心球模型的三維場分佈.通過與目前在場計算中常用的有限差分法進行比較，可以看出多重網格法的計算效率和計算精度優于有限差分法.本文表明利用多重網格法計算三維場大大提高了場分佈的計算效率，縮短了計算時間，因此為后續計算打下了良好的基礎
  6. Through the above researches, such conclusions were drawn that in the course of fitting the semivariogram of the yearly annual mean rice water sensitivity index in yunnan, the fitting precision of ordinary kriging spherecial model is better than others ; range at the direction of 80. 5 degree is outstanding than others ; as for the precision of interpolation, ordinary kriging spherecial model is higher than others

    研究表明：雲南水稻多年平均水分敏感指標變異函數以普通克里金球狀模型擬合最優、 80 . 5度方向變程最大、插值模型以普通克里金球狀模型插值精度較高。
  7. The paper analyses the advantages and disadvantages of a large number of harmonic analysis methods and puts forward to a new algorithm in order to improve precision of fft, which is plural list and interpolating windowed split - radix fft ( srfft ). the simulating result shows that the algorithm can meet precision of harmonic parameters

    為了提高fft的精度，本文在分析目前國內外各種諧波分析及測量方法利弊的基礎上，提出了利用復序列加窗插值分裂基快速傅立葉變換（ srfft ） 。該演算法能極大地提高fft計算的精度，從而滿足諧波測量中對諧波參數的精度要求。
  8. The concept of row ( column ) transposed matrix and row ( column ) symmetric matrix is given, their basic property is studied, and the formula for full rank factorization and orthogonal diagonal factorization of row ( column ) symmetric matrix are presented, which can reduce dramatically the amount of calculation and save the cpu time and memory without loss of any numerical precision

    摘要提出了行（列）轉置矩陣與行（列）對稱矩陣的概念，研究了其性質，給出了行（列）對稱矩陣的滿秩分解和正交時角分解公式，極大地減少了行（列）對稱矩陣的滿秩分解和正交對角分解的計算量與存儲量，且沒有降低數值精度。
  9. Thirdly, to improve traditional method ( midpoint displacement algorithm ), various coefficient scales are used in interpolating data. to the end of this paper, a series of experiments on interpolating data are conducted, which indicate that the interpolation improves the precision of results and avoids the creasing problem effectively

    利用已有的dem數據進行幾種不同方法的內插計算，計算結果表明改進的隨機中點移位內插法能有效地避免插值點附近明顯的「尖峰現象」 ，且插值精度有了一定的提高。
  10. It can improve the precision of the efficiency coefficient and stod, at the same time it do not increase the computational complexity, so there are some use value

    該方法能提高出力系數的精度，從而達到改善短期優化調度精度的目的，同時它不會增加短期優化調度的計算量，因此具有一定的實用價值。
  11. K method fft the echo signal, and transform it to the ? k domain, it is the most effective method to implement the 2 - d sar shifting filter. however, stolt interpolation will increase the imaging time, and will influence the quality of the image

    波數域成像演算法是sar二維移變濾波器的最有效實現，但是stolt插值運算將帶來附加的計算量並且頻域插值精度對成像質量有一定影響。
  12. The impaction of numerical precision on the accuracy of simulated flow field is checked. curving level of throat wall arc mesh is compared to see the effect on flow loss

    並比較了數值精度對流場模擬精度的影響和喉道壁面網格的圓弧度處理對流動損失的影響。
  13. For carrier synchronization, a method of estimating the ofiset of carrier frequency has been presented, which has a more broad range of the estimated oflset of carrier fiequency and more accurate result man other methods, then, a method of estimating the carrier complex phase has been presented, which corrects directly the ofiset of carrier phase

    對于全數字接收機中的載波恢復，先提出了一種估計范圍寬、估值精度高的載波頻偏估計演算法，接著介紹了一種可以直接對載波相位偏差進行補償的復相位估計方法。
  14. According to the mathematic modeling principle of physical problem, the error of lattice boltzmann model is analyzed in chapter 3. the nonlinear deviation term from the navier - stokes equation is given, and the main model coefficients, such as speed of sound, viscosity and so on, are verified by numerical computation, the results show that the lattice boltzmann method has second order precision in space and in time which satisfy the engineering application, whereas, the compressible effect ca n ' t be neglected along with mach number increasing, and must be reduced or eliminated

    其次，按照物理問題數學建模的原則，對格子法的誤差進行了分析，給出了格子bgk方程再現navier - stokes方程時的壓縮誤差項，並數值驗證了格子模型的聲速及粘性系數等相關參數的精度，表明格子模型盡管具有時空二階精度，能滿足工程計算的要求，但隨著mach數增大，壓縮誤差逐漸成為主要誤差，必須予以消除。
  15. For measurement of lateral vibration acceleration of railway bridges, necessary technical measures should be taken to ensure that the data collecting will not be mixed and overlaid, and setting of the data sampling frequency should also meet the requirements for amplitude precision

    摘要加速度測試必須採取技術措施保證數據採集不混疊，采樣頻率的設置必須能夠滿足幅值精度的要求。
  16. Indicates the precision of numeric parameters

    指示數值參數的精度。
  17. Coupling ipo with fdtd, we pick up " background noise " to improve numerical value precision

    在ipo和fdtd之間場耦合中，通過提取「本低噪聲」方法提高數值精度。
  18. Class with the parameter name, data type, width, source column name, parameter direction, numeric precision, and other properties

    使用參數名稱、數據類型、寬度、源列名稱、參數方向、數值精度和其他屬性初始化
  19. Class that uses the parameter name, data type, length, source column name, parameter direction, numeric precision, and other properties

    使用參數名稱、數據類型、長度、源列名稱、參數方向、數值精度以及其他屬性初始化
  20. An improved numerical method is presented through in - depth numerical analysis of the factors affecting the accuracy of numerical calculation. by reasonably matching the numerical grids to the mathematic model used, the present method can make the numerical calculation processed with high accuracy. additionally, a local mapping method is presented for simulating the wave interaction

    通過對影響機翼氣動力數值精度的多種因素的分析，對已有的數值方法進行了改進，使數值網格與數學模型合理匹配，確保數值計算結果精確可靠，大大提高計算效率，並給出了復雜條件下的非定常非線性數值結果。
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