近似值測定數 的英文怎麼說

中文拼音 [jìnsìzhícèdìngshǔ]
近似值測定數 英文
approximate measure
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 測 : 動詞1. （測量） survey; fathom; measure 2. （測度; 推測） conjecture; infer
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  1. The water quality respond relation of input - output measurements are established by systematic theory in this paper. according to the peculiarity of hydrology and the necessity of water quality inverse problem the multi - parameter inverse problem model based on ordinary differential equation is developed. the existence and uniqueness of the solution of the ordinary differential equation about two parameters or multi - parameter are to be proved. the unstability depending on errors between monitoring data and interpolation approximate data are analyzed and demonstrated. cubic spline interpolation function, the least two multiply and positive rule method are conjoined for obtained solution of multi - parameter. the results from this algorithm indicats its efficient to the multi - parameter identification in water quality modeling

    本文應用系統理論，建立了水質多參數輸入輸出之間的響應關系；根據河流水文水質變化特點和參數反問題的需求，建立了水質常微分方程多參數反問題模型.根據常微分方程參數反問題的數學理論，作者給出了兩參數和多參數水質常微分方程反問題的解的存在性、唯一性的理論證明過程和結論；還針對水質現有監測資料的測驗誤差和插值近似計算誤差造成參數反問題的不穩定性，將三次樣條插值函數、超定方程最小二乘法和正則化演算法有機地結合使用，成功地給出了水質參數反問題的穩定化演算法.最後給出了應用計算結果
  2. A review with 11 references is given on the establishing principle and method of normal reference value of elements in human hair and blood including the definition, determination, expression, transference, and significance of reference value

    摘要從參考值的定義、確定、表述、移植，及其意義等五個方面介紹了人體頭發和血液微量元素正常參考值的確定原則及方法，重點介紹了可供實際操作的測定值統計法（復雜統計處理法）和文獻值移植法（近似參數處理法） 。
  3. The contrasting analysis is carried out against approximate calculation, numerical simulation and the real measuring result of flow - in direction stress along the die - entrance in the rectangular drawing. it is considered that in the condition of non - uniform solution, part calculation has credibility to some extend

    摘要針對矩形盒拉深中凹模口流人方向應力的近似計算、數值計算和實際測量結果進行了比較分析，認為在尚未得到統一解的情況下，分割計算具有一定的可信度。
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