混響邊界 的英文怎麼說
中文拼音 [húnxiǎngbiānjiè]
混響邊界
英文
reverberating boundary-
A one - dimensional oceanic mixed layer model with the m - y level - 2. 5 turbulence closure schemes is employed. the rate of energy loss by breaking waves is estimated by parameterization and incorporated into the model as a source of turbulence kinetic energy ( tke ) by modifying the existing surface boundary condition of tke equation. the velocity field and turbulence energy budget are calculated under different forcing conditions ( the results given below are for a wind speed of 20 m / s. )
採用一維2 . 5階湍封閉混合層模式，根據參數化方法對波浪破碎導致的能量耗散率進行了估計，通過改變湍動能方程的上邊界條件引入波浪破碎對湍動能生成的影響，計算了不同風應力強迫下的混合層流場結構和湍能量收支（下述給出的結果是取風速為20m s得到的） 。The radar cross section of grounded open cavities is computed by fem combined with boundary integral equation method. the cavities filled with complex materials are also analyzed. accurate results have been obtained
應用eb - fem結合邊界積分方程對接地腔體的雷達散射面積進行了分析，討論了腔體內復雜介質填充情況對散射特性的影響，得到了比較精確的結果，討論了該混合方法在分析此類問題中的優缺點。The main content is : 1. through the pan evaporation experiments, in which the effects of wind speed, area and mass on the evaporation process has been studied, it is found that the behaviors of mixed and pure liquids have different characteristics, which cannot be explained by the theory of boundary layer control and basic evaporation
主要內容有： 1 、本文用淺盤蒸發法考察了風速、蒸發面積和初始質量對油蒸發過程的影響，發現混合液體蒸發與純液體蒸發行為有不同特點，將蒸發分為邊界層控制步驟和基本蒸發不足以反映其蒸發特點。When dicussing reliability design and reliahbaiiy ensuring methods, a new reliability calculating model of petroleum logging tools is presented, reliability assurimg technologies should be taken in petroleum logging tools and their using approaches are presented and stated from electricity design and mechanical design, reliability system model of petroleum logging tool is set up according to the latest reliability theory, reliability indexes of petroleum logging tool and their acquiring ways are discussed, the reconmended reliability indexes ( mwture, nolwnm, mtbf, mttf ) of petroleum logging tool are presented : the mean working time under rated error ( mwture ) of the new tool is obtained through experiments. when studying data processing methods, the property of gamma - ray signal is stated and the type of it ' s measuring error is examined using statistical method, the basic theory of digital filtering and the basic situation of digital filtering methods are introduced and analyzed, the factors affecting digital filtering effect to gamma - ray signal and the effect of digital filtering to logging curve are analyzed, the evaluting criteria ( rvi, rmse, sfi ) of digital filtering effect are set up from two aspects, named as real value acquiring of steady section and the formation boundary checking and processing, the related filtering methods and examining methods are given out. the design methods of digital filter used to process gamma - ray signal are discussed, the mixed filtering scheme of natural gamma - ray log is presented, the realization ways are discussed. the selective filtering system and it ' s realization flow are given out through quantitive reseaching to part of digital filters, three new filtering sheme will be used to process gamma - ray signal in era2000 logging system
在探討可靠性設計與可靠性保障技術時，提出了石油測井儀器的可靠性計算新模型，從電氣和機械兩個方面，提出並闡述了應採用的可靠性保障技術及其使用方法：根據最新可靠性理論，建立了石油測井儀器的可靠性系統模型，探討了石油測井儀器的可靠性指標及其獲取途徑，提出了推薦使用的石油測井儀器可靠性指標（ mwture ， nolwnm ， mtbf ， mttf ） ；通過試驗，得到了所設計儀器的穩定工作時間（ mwture ） 。在研究數據處理方法時，闡述了伽瑪信號的特徵，對測量誤差類型進行了統計檢驗；介紹了數字濾波的基本理論、數字濾波方法的概況，並進行了分析；對伽瑪信號數字濾波效果的影響因素及其對測井曲線的影響進行了基本分析；從獲取平穩段真值、地層邊界的檢測與處理兩個方面，建立了數字濾波效果的評價準則（ rvi ， rmse ， sfi ） ，給出了相應的數字濾波方法及效果評價方法；探討了自然伽瑪信號數字濾波器的設計方法，提出了適合自然伽瑪測井的混合濾波方案，探討了混合濾波方案的實現途徑；通過對部分數字濾波方法的定量研究，給出了靈活可選的數字濾波系統構成及實現流程；提出的三種濾波方案，將用於era2000成像測井系統，對自然伽瑪測井數據進行濾波處理。This article introduces related researches on non - successive structural substitution, including analysis on the characteristics of institutional structure for mixed economic organizations and their perimeter, and on impact of institutional environments such as property right, contract law, and prestige effect on mixed economic organizations
文章介紹了在這一研究思路下國外的有關研究運用非連續結構性替代分析工具，既分析了混合經濟組織的制度結構特徵，指出了混合經濟組織的邊界，又分析了產權、契約法、聲譽效應以及不確定性等制度環境因素對混合經濟組織的影響。By ansys, we can build temperature - calculating modes of p. c box girder t and then calculate the effect of temperature fields on the stress and the line deformation. 3. adopt the spot - measure method
2 、用ansys建立預應力混凝土箱梁t構的溫度計算模型，由實測溫度給定邊界條件，分別計算出溫度對預應力混凝土箱梁t構撓度的影響以及對預應力混凝土箱梁截面應力的影響。The integral seismic behaviors of other three kinds of connection, namely bfp, dst, and sep connections are better than that of normal wfp connection. by the way, finite - element ( fe ) analyses were conducted to predict the influence on cfst structure under different kinds of elements, mesh density, load manners and boundary conditions. after that, a special program was designed to define the constitutive relationship of concrete material in cfst structures based on apdl in ansys program
此外，本文探討了不同的單元類型、不同的網格劃分密度、加載方式與邊界條件對鋼管混凝土組合結構數值計算的影響，運用ansys中的apdl語言，編寫了適合鋼管混凝土結構分析的混凝土材料本構關系程序，並運用該程序結合ansys對常規栓焊節點與翼緣全螺栓連接節點的滯回性能進行了初步計算，為進一步地數值分析打下了基礎。分享友人