指數衰減因素 的英文怎麼說

中文拼音 [zhǐshǔshuāijiǎnyīnsù]
指數衰減因素 英文
exponential damping factor
  • 指 : 指構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 衰 : 衰動詞（衰弱） decline; wane
  • 因 : Ⅰ動詞[書面語] （沿襲） follow; carry on Ⅱ介詞1 [書面語] （憑借; 根據） on the basis of; in accord...
  • 素 : Ⅰ形容詞1 （本色; 白色） white 2 （顏色單純） plain; simple; quiet 3 （本來的; 原有的） native Ⅱ名...
  • 指數 : 1. [經] （比數） index number; index 2. [數學] exponent
  • 衰減 : attenuation; decay; damping; reduction; rejection; weakening; deamplification; dampening; dying o...
  1. Its main contributions include the following several aspects : firstly, the dissertation constructs the mathematic model of short baseline orientation determination using two geostationary satellites and analyses the applicable conditions of carrier phase interferometry. orientation determination precision is analysed in depth through both the conventional linearized method and monte - carlo computer simulation method, and the mathematical simulation results show that the linearized method has the shortcoming of fairly low elevation error analysis precision in high latitude area so as not to be very appropriate there. by analyzing the definite factors influencing orientation precision, the dissertation develops the concept of orientation dilution of precision, which uncovers the internal cause of exotic error behavior of bi - satellite orientation, and has important guiding significance for practical engineering applications

    本文系統地研究了基於「北斗一號」衛星載波相位干涉測量原理實現地球靜止雙星定向的相關技術，主要研究成果包括以下幾方面:首先，建立了利用兩顆地球靜止軌道衛星進行短基線定向的數學模型，分析了載波相位干涉測量的適用條件;採用傳統的線性化解析法及蒙特卡洛隨機模擬法兩種途徑對雙星定向的精度進行了詳細分析，數學模擬結果表明在高緯度地區線性化解析法由於俯仰角誤差分析精度略有下降而不太適合;在分析定向精度確定性影響因素的基礎上，提出了雙星定向精度衰減因子odop的概念，揭示了雙星定向誤差特殊表現的內部機理，對實際工程應用具有重要的指導意義。
  2. Corresponding to the correct water hammer mathematic model ( 3 ), the character difference equation is by comparing the new mathematic model with the old mathematic model, the last calculative part of paper argues the falseness of the current water hammer mathematic model, makes use of the improved character line method to analyze the correct mathematic model ( 3 ), studies all kinds of facts " impact on water hammer pressure value and water hammer phenomenon attenuation, points out that, in the long pipeline system, the subarea calculation of head loss along with flow rather influences the calculative results of water hammer pressure, advices to take the subarea calculation of head loss along with flow into account in the water hammer calculation of the long pipeline system

    對應于正確的水擊數學模型（ 3 ）的特徵差分方程形式如下c ，弓+吼川一c ，唱一幾弓扮幾rv另卜川= o幾代+吼川一幾唱一吼嶸{一c :腳丸}唱} ? 「本論文在最後的計算部分，通過對新老數學模型的數值計算比較，進一步論證了當前水擊數學模型的不正確性。並且應用改善了的特徵線法對正確的數學模型（ 3 ）進行了計算分析，研究了各種因素對水擊壓強值和水擊現象衰減的影響，指出在長管道系統中，沿程水頭損失的分區計算對水擊壓強的計算結果影響較大，建議在長管道系統的水擊計算中應按分區進行沿程水頭損失的計算。
  3. Lt is obvious that the decaying rule of average reverberation intensity is affected by scattering coefficient of sea floor, sound speed profile, inclination of bottom etc. the sea floor scattering function is the most importan factor to the intensity decaying rule

    結果表明：海底散射方向性指數因子、海水聲速梯度、海底傾斜角等對海洋混響平均強度的衰減皆有影響。海底散射方向性指數因子對其影響最大，即適當選取海底散射模型是淺海近程混響建模的首要因素。
  4. Primarily there are two aspects : 1 ) the calculation model of the value of land classifying units - - model of time distance attenuation. in the calculation model of the value of land classifying units, author brings forward the model of time distance attenuation. in this model adopting the network analysis, and by establishing the road network, and proceeding path analysis, computing the time distance, then proceed the exponential attenuation or straight line attenuation on time distance, get the value of influence factor of the land classification unit

    主要有兩個方面： 1 、定級單元分值計算模型? ?時間距離衰減模型在定級單元分值的求取模塊中，提出了時間距離衰減模型，模型中採用網路分析的方法，通過建立道路網路，進行路徑分析，求取時間距離，進而按時間距離進行指數衰減或直線衰減，得到定級單元因素因子影響分值。
  5. The resistance attenuation of each element is considered in the design process, and the statistical parameters of the elements are assumed to be the same as the investigated results of china. in the process of the calculating of the element reliability attenuation in expected service life, several load combination and different load ratio of dead load to live load are considered. in order to ensure that structure reliability in expected service life satisfies the requirement of today ’ s code, a method of choosing the initial reliability index of structure basing on the length of expected service life and the structure resistance attenuation is proposed and the corresponding durability reduction factor is chosen by an optimum algorithm

    根據我國現行建築結構可靠度設計原理，考慮耐久性退化影響因素，設計了抗力統計參數與我國調查結果一致的五種代表性鋼筋混凝土構件，考慮多種荷載效應組合以及不同荷載效應比，研究了不同使用期內代表性構件的可靠度變化規律;為保證預期使用期內結構可靠度水平仍可滿足現行規范要求，提出了根據預期使用期和抗力衰減幅度確定結構設計可靠度指標的方法，並通過優化的方法確定了預期使用期內的耐久性折減系數，給出了預期使用期結構可靠度設計的實用設計方法。
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