未知數量 的英文怎麼說

中文拼音 [wèizhīshǔliáng]
未知數量 英文
unknown quantity
  • 未 : Ⅰ副詞1 （沒） did not; have not 2 （不） not Ⅱ名詞1 （地支的第八位） the eighth of the twelve ear...
  • 知 : Ⅰ動詞1 （知道） know; realize; be aware of 2 （使知道） inform; notify; tell 3 （舊指主管） admin...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 未知 : unknown
  • 數量 : quantity; quantum; amount; magnitude; number
  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. The mesh points are numbered with index k in the order in which the unknowns are considered.

    網格點按所考慮的未知量以腳標k來計數。
  3. According to the geometry of slope measurements for the subjective wavefront optometer, a wavefont reconstruction model using zernike polynomial with normalization factor is put forward. based on householder transformation and gram - schmidt orthogonalization method, two methods for working out unknown zernike coefficients are bring forward. the error propagation parameter for the wavefront reconstruction model is deduced

    深入研究了帶標準化因子的zernike多項式的性質;針對主觀式像差儀波前斜率采樣方案，提出了採用帶標準化因子的zernike多項式對眼測試波前進行重建的數學模型;提出了兩種求解方法，即基於householder變換求解法和基於gram - schmidt正交化求解法，用於確定重建模型中的未知模式系數;推導出了該波前重建模型對斜率測量誤差的傳遞系數。
  4. As a result of interference of light, the spectrum distribution of light will change in some condition when it pass through some medium, and the change is determined by the parameter of the medium

    利用光譜儀測量干涉后的光譜分佈，再結合優化演算法擬合測量光譜曲線，反演出光學介質的某些未知物理參數。
  5. If we wish to check the structure for a significant number of hypotheses， the use of a small computer facilitates the extensive summation processes.

    如果要計算未知數很多的結構，使用小型計算機能使大量求和過程更簡便。
  6. In succession, this paper depict data mining which according to enterprise ' s operation object, explore and analyze a lot of enterprise ' s data to hint hidden, unbeknown or known business rule

    它是按企業既定業務目標，對大量的企業數據進行探索和分析，提示隱藏的、未知的或驗證已知的商業規律，且進一步將其模式化的數據處理方法。
  7. Any flight test and wind tunnel correlation always suffers from a great number of unknowns.

    在對飛行試驗與風洞試驗進行比較時總有大量的未知數。
  8. This study reveals that the number of friends, the types of friends, communication frequencies, the types of intercourse activities, the relationships and importance of friends have obvious influences on minors ' health

    本研究顯示，知心好友數量、知心好友類型、交往密度、交往活動類型、好友關系、好友分量輕重等六因素對未成年人的健康成長影響顯著。
  9. Please kindly inform us if you find any seer quality problems and the defectie percentage is high within 20 or 30 days after you receie the goods which is unsold yet

    大貨收到后20天~ 30天，如果在未銷售前，發現嚴重的質量問題，並且數量多的前提下，請告知，我司將給予數量補償，並且支付一切的費用！
  10. This paper also points out the consistency that can be generalized more than one dimension. so, we achieve the large sample property - consistency of this class of model on the fixed design. in this paper, for fixed design points xi ; under the assumption that the unknown function g is continuous function and the moment of random error exists and is finity, we discuss and show that the estimators n, gn and n2 for, g and 2 have strong consistency, p th - mean consistency for more general nonparametric weighted fuction

    本論文在x ；是固定設計的情況下，假定未知函數9 （ ? ）連續，對非參數權函數的條件更為一般和基本，並對隨機誤差e ；的矩的要求有限，討論並證明了在這些條件下， p ； g （ ? ）的估計量札lin （ ? ）及誤差方差a 』的估計量枯相合性和叭三2 ）階平均相合性
  11. In this article, we give sufficient conditions for the existence of solutions to the vectorial hamilton - jacobi equations with dirichlet boundary condition : obtaining, in addition, an application to the theory of existence of minimizers for a class of non - convex variational problems

    本文給出了一類依賴于自變量和未知函數的梯度的向量情況隱式偏微分方程的dirichlet問題的弱解的存在性的充分條件，並將該結果應用到一類非擬凸變分問題中去。
  12. In this thesis, based on item response theory, a number of ways to estimate the latent trait and item parameters were introduced and their advantages and disadvantages were analyzed ; what is more, empirical logistic regression and two parameters logistic model ( 2plm ) are combined to set up a linear model by logit - mapping and a new parameter - estimation method is proposed

    新方法將經驗logistic回歸用於兩參數logistic模型的參數估計，使用logit變換建立線性模型，利用線性模型的最小二乘估計得到第j個項目的項目參數向量_ j = （ _ j ， _ j ）的兩步估計由於x _ j含有未知的討厭參數，的理論值也和有關，我們結合上式的結果對進行再估計。
  13. List the given information and the unknown quantities.

    列出給定數據和未知量。
  14. The unknowns in the equations are the values of the dependent variables at the node.

    方程中的未知數是結點上因變量的值。
  15. A system with as many equations as unknowns will be consistent.

    一個方程數和未知量數一樣多的方程組將是相容的。
  16. Unlike the normal two stages estimate method ( the usual nonparametric weighted method combined with the least square estimate ), considering the characteristics of this model, this paper uses the least square estimate combining with the usual nonparametric weighted method and defines the estimators and n2 for the unknown parameter, the unkown fuction g ( ) and the unknown variance of errors 2

    與通常採用的兩階段估計方法即非參數權函數法結合最小二乘法不同，考慮到此模型本身的特性，本文採用最小二乘法結合一般非參數權函數估計方法，定義了未知待估參數和未知函數g （ ? ）及誤差方差~ 2的估計量（ ? ） _ n ， （ ? ） _ n （ ? ）和（
  17. A new method for blind separation of sparse sources with unknown source number

    未知數量稀疏源盲分離的一種新方法
  18. Sunday ' s shooting was the latest in a series of incidents in which blackwater and other foreign contractors have been accused of shooting to death an unknown number of iraqi citizens

    周日的槍擊事件是最近一系列事故中的一起，在這些事故中，黑水公司和其他外國公司已經因槍殺未知數量的伊拉克人民而被指控。
  19. Until now, though, such genes have been discovered piecemeal, so no one knows how many there are

    直到現在，只是零星地發現這類基因，因此這些基因的數量仍舊是未知數。
  20. Manufacturers make estimated claims for archival quality of their papers and inks based upon accelerated tests

    雖然現在生產商要求提高紙和墨的質量，以增加列印的速度，但結果還是未知數。
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