finite sampling 中文意思是什麼
finite sampling
解釋
有限抽樣-
Besides, this paper adopts the random finite element method, uses geometric and physical mechanical parameters that are relevant to lining weight of surrounding rock, coefficient of lateral pressure, height or buried depth of vertical loading, elastic resistance coefficients of surrounding rock, elastic modulus of support structure, unit weight of concrete, thickness of the structure as well as torsional strength and compression strength of concrete and etc., as random variables, applies the monte - carlo method to sampling by computer, preliminarily evaluates the reliability of bearing capacity and stability of molded concrete lining of the xuefeng mountain tunnel, and obtains the related displacement of the lining, mean value and variance of internal force, and computed the reliability index of lining structures
此外，本文採用隨機有限元方法，將圍巖容重、側壓力系數、垂直荷載高度或埋深、圍巖的彈性抗力系數、支護結構的彈性模量、混凝土容重、結構的厚度以及混凝土的抗扭與抗壓強度等與襯砌結構有關的幾何與物理力學參數作為隨機變量，應用蒙特卡洛理論進行計算機隨機取樣，對雪峰山隧道模注混凝土襯砌的承載力與穩定性的可靠度進行了初步評估，得出了襯砌的相關位移與內力的均值和方差，並計算出了相應的襯砌結構可靠指標。 -
Because the structural interpretation of the 3d model only is of non - uniqueness and uncertainty due to geometric constraint, the finite strain analysis was also applied in the structural interpretation. 184 oriented samples have been drilled at 18 sampling sites in yanjinggou, western sichuan
在川西鹽井溝地區18個采樣點鉆取了184塊定向巖心樣品，通過磁組構的分析結果發現，鹽井溝地區的磁組構基本上都是弱應變的初始變形組構，褶皺前翼應變強度比后翼略強。 -
Sampling methods for common distributing random numbers and the samples of random fields are proposed. combining the monte - carlo simulation technique with the one - dimensional discretization finite element method, the monte carlo - finite element method for stochastic analysis and the reliability computation of thin - walled box girders are proposed in this thesis
建立了幾種常用分佈隨機數以及隨機場隨機樣本的產生方法；將蒙特卡羅數值模擬與薄壁箱梁一維離散有限元法相結合，提出了薄壁箱梁隨機分析和可靠度計算的蒙特卡羅有限元法。 -
When the network - induced delay is less than and more than one sampling period, the augmented state vector method is used respectively to model the system as a finite - dimensional discrete - time lti ( linear time - invariant ) system
在網路誘導時延小於和大於一個采樣周期的情況下，分別利用增廣狀態向量法，將系統建模為有限維離散時間線性時不變系統。 -
Abstract : to settle the numbers of groups, the moth and features of group sampling are analysed, and its estimator is goven. then using cauchyschwartz unequility, it seeks the best apportion with finite cost
文摘:為了確定分類抽樣的各類單位數，分析了分類抽樣的抽取方法和特點，同時給出其簡單估計，然後利用柯西-施瓦茨不等式推導出在給定調查費用情況下的最優分配
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