volume-based model 中文意思是什麼
volume-based model
解釋
體積模型-
Considering the special structure of multi - ribbed slab, founding diphase body mechanical model of compound material, strengthening rib beam and rib pillar by equivalent volume ratio of concrete and slice brick, the paper drew elastic compution constant and shear constant. based on the things, the paper simplified isotropy compution model to wall, gave practical design formula of elastic mold and shear mold, provided necessary parameter for practical design formula of elastic rigidity. finally the calculating results agree well with the text results
結合密肋復合墻板的特殊構造，建立墻板的復合材料二相體力學模型，按照混凝土與砌塊體積比不變原則對肋梁肋柱同時加強，得出墻板的彈性計算常數及剪切常數，在此基礎上，進一步將墻板簡化為各向同性的計算模型，給出墻板彈性模量及剪切模量實用計算公式，為密肋復合墻板的實用彈性剛度計算公式提供必要的參數。 -
Research on railway traffic volume forecast based on grey forecast model
基於灰色預測模型的鐵路客運量預測研究 -
It adopts reynolds time - average n - s equation and k - ? turbulence model to calculate the inner 3 - d viscid turbulence flow of centrifugal pump. in the unstructured grid, the governing equations are discretized with finite volume method based on finite element method. then the pressure correction method is used to carry out numerical calculation
而後採用基於雷諾時均n - s方程與標準-湍流模型來求解離心泵葉輪內三維粘性紊流，在非結構化網格中，採用基於有限元的有限體積法對方程進行離散，用壓力校正法進行數值求解。 -
Fitting the experimental data into the general effective media ( gem ) equation, a theoretical percolation curve was gained. a mathematical model was proposed which is based on the gem equation and the dilution effect of filler volume fraction due to thermal volume expansion
使用有效介質普適方程（ gem方程）對實驗數據進行擬合，得到導電復合材料的理論滲流曲線，根據gem方程和基體的體積膨脹，建立起一個數學模型。 -
By analyzing the microstructure, the digitized cell model of three - dimensional four - directional composites is established, then the mechanic properties of three - dimensional four - directional composites are calculated by the digitized cell - based finite element method ( dcb - fem ), and the influence of the braiding angle and the fiber volume fraction is discussed
摘要在確立三維四向編織復合材料數字化單胞力學分析模型的基礎上，運用均勻化方法對三維編織復合材料的等效彈性性能進行了分析計算，並討論了編織角和纖維體積含量對此材料等效彈性性能的影響。 -
Through consulting lots of relevant references, present research of direct drive volume control hydraulic servo system is summarized in this paper, the principle and character of this system are expatiated, the principle of vector control is introduced. at the same time, the mathematical model of ac asynchronous motor is set up based on the vector control theory. the mathematical models of both the pump controlled motor and pump controlled cylinder are set up and simulated in this paper
在查閱大量國內外相關文獻的基礎上，本文綜述了國內外對該系統研究概況，闡述了該類系統原理和特點;闡述了矢量控制的基本原理，並基於這一原理建立交流異步電動機的數學模型;分別建立了泵控馬達系統和泵控缸系統的數學模型，並給出了模擬分析;設計了用於泵控馬達系統的集成閥塊，加工了密閉壓力油罐;針對現有直驅式電液伺服裝置所存在的問題，本文主要針對系統工作過程中所產生的噪音與爬行問題進行了一定的研究。 -
The numerical simulation equations of the border curves in term of and as well as the matching rules and the frequency dependence of microwave electromagnetic parameters of a broad - band homogeneous absorbing coating with a finite value of reflection loss are available. these results pointed out the direction to develop rams ". according to the radar - absorbing model, the optimized design of rams with thin - layer, light - weight, broadband and strong - absorbing is available by the simple genetic algorithms, which can effectively conduct the research work of rams to the detail. small but completely, the electromagnetic parameter ' s databases of rams that based on actual microwave absorbers have been set up, the object function has been constructed which conform to the involved goals, the adaptive coding measure is taken which extends the coding length dynamically adapting to the condition of the number of actual absorbers or the precision of thickness and absorber - volume - percentage, the decoding technique is initiated which satisfies light - weight and strong - absorbing as well as thin - layer and broadband by adopting of tracing variable restricting conditions dynamically to control total thickness. when decoding, the variable restricting conditions of thickness are dynamically traced, so gain the radar absorbing coatings of light - weight multiple - layer single - ingredient. similary, of thickness and absorber - volume - percentage, of light - weight multiple - layer multiple - ingredient. also, the rams ' demand to radar - absorb performance as frequency is met making use of the penalty function
作為遺傳演算法的具體實施：根據本實驗室近來研製的吸波材料，建立了吸波材料的相關數據庫；構造了能真實體現「薄、輕、寬、強」優化目標的目標函數；根據材料的實際數量以及塗層厚度精度要求、吸收劑體積分數精度要求，建立了能動態擴展相應碼長的自適應編碼方法；首創了通過動態跟蹤變量的約束條件來控制塗層總厚度的解碼技術，以此實現了在不弱化寬頻、高強的吸波性能目標的同時，兼顧到薄層、輕質的使用性能要求；在解碼時通過動態跟蹤厚度變量的約束條件，實現了多層單組分吸波塗層對重量輕的要求；通過動態跟蹤厚度變量的約束條件和吸收劑體積分數的約束條件，實現了多層多組分吸波塗層對重量輕的要求；使用權重系數變化法，實現了吸波塗層的分頻段吸波性能要求。 -
First, the characteristic of flight segment volume is analyzed, existing model selection method is discussed, forecasting model selection method based on support vector machine is described
首先，本文分析了航段運量特點，討論了現有模型選擇方法，在此基礎上闡明了基於支持向量機的航段運量預測模型選擇方法。 -
The model of variability of submergence depth is established based on the law of volume balance, and the changing trends of parameters like submergence depth etc are analyzed. according to the principle of supply and discharge balance, the method to predict oil yield is presented. subject to different objective functions, the corresponding optimum combinations of suction parameters are analyzed, and the importance of choosing objective function to optimum combination of suction parameters is emphasized
本文研究了油井流入動態關系，根據井筒內液量平衡原理，建立了沉沒度變化的數學模型，分析了沉沒度等參數變化規律；根據油井供、排平衡原則，得出了抽油泵排量系數相對穩定狀態下產量預測的關系；分析了不同目標函數下，油井抽汲參數的組合效果，指出了目標函數選取對參數合理組合的重要性。 -
In order to calculate quantitatively the process of rainfall - runoff, the css model of zhang cha catchment is developed based on epa ’ s swmm ( storm water management model ) in this paper. and then calculate cso spill water quality 、 spill volume and spill time at different intercepting ratio using the developed swmm, and analyze the effect on them by intercepting ratio
為了實現上述降雨?徑流過程的定量計算，本文引入美國環保局的城市暴雨水管理模型（ swmm ）建立了佛山市張槎排水區的合流制排水系統模型，使用該模型計算了不同截流倍數時溢流污水的水質、水量以及溢流時間，並分析了截流倍數對它們的影響。 -
Firstly, based on the present research all over the world, a 3d quasi - single phase model is built together with k - equations. the special feature of this model is taking account of the influence of interaction between liquid and gas, that is to say, the influence of interphase drag force, lifting force perpendicular to the relative velocity, virtual mass force and gas or liquid volume fraction in the fluid field have been considered. a 3d two - fluid model is also built in order to describe more accurately the fluid flow on distillation trays by comparing the computational results of quasi - single phase mathematical model with of two - fluid mathematical model
本文在國內外已有的研究基礎上，首先建立了以k - （封閉模型為基礎的三維擬單相流模型，該模型的特點在於充分考慮了氣液兩相間相互作用的影響，即計入了相間曳力、橫向升力、虛擬質量力和氣、液相含率對流場的影響；並建立了塔板三維雙流體模型，主要目的是通過對比擬單相流數學模型、雙流體數學模型的計算結果，建立能夠準確描述塔板上流體流動的數學模型。 -
In the paper, a numerical model of the interior flow of the submarine - based missile underwater launching is established. simulation of the interior flow of submarine - based powerless missile underwater launching is performed by applying the finite volume method
本文建立了潛射導彈水下發射的內流場數學模型，採用有限體積法（ fvm ）對無動力導彈潛艇發射時的內流場進行了模擬計算。 -
Based on the analysis of present conditions of internal - combustion - railway and electronic - railway as well as the energy policy of the country, the paper deals with the make - up of investment and cost of these railways. lt also suggests method and procedure for cost caculation and provides an optimum - transforming - time model in consideration of freight volume, investment, cost, etc
本文在分析內燃鐵路和電氣鐵路的現狀及國家能源政策的基礎上，討論了內燃與電力鐵路的投資構成及成本構成因素，給出了成本計算的方法和步驟，綜合運量、投資、成本等因素提出了最佳改建時機模型。 -
Damage evolution equations in the tensile process were formulated, using ae accumulative relative energy as a damage variable, based on single bundle model, average rod model and volume - averaged model, for single bundle, 2 - d woven and 3 - d braided c / sic composites respectively
利用聲發射累積相對能量定義損傷變量，通過單纖維束模型、平均桿元模型以及體積平均化模型初步建立了纖維束、二維編織、三維編織c sic復合材料拉伸損傷演化方程。 -
The formulation for the flow model is given using the finite element / control volume ( fe / cv ) technique based on darcy ' s law of creeping flow through a porous media. the heat transfer model is based on the two - dimensional, transient heat conduction equation, including heat generation. the cure kinetics model is based on kamal ' s model, and the degree of the resin cure as a function of temperature and time
樹脂流動階段的模擬是根據牛頓流體在多孔介質中的滲流理論，應用darcy定律並使用有限元/控制體技術建立起來的；熱傳遞模型是一個二維瞬態熱傳導方程，考慮樹脂反應放熱；樹脂的固化模型利用了kamal提出的固化動力學方程，將固化度取為時間和溫度的函數。 -
A multi - block incompressible viscous flow solver has been developed that can be applied to simulation of a variety of ship maneuvering related flows and calculation of hydrodynamic forces. validation and verification of the solution procedure are carried out on several model problems with good agreement to experimental and numerical results. the present block - structured viscous flow solver is based on solving the reynolds - averaged navier - stokes ( rans ) equations with a second - order cell - centered finite volume method ( fvm ) on non - staggered grids
本文即在這種背景下，瞄準船舶操縱水動力預報方面的國際前沿和熱點課題，通過對現代船舶粘性流計算方法的研究，自主開發了一個船舶操縱粘性流求解器，並將所開發的求解器成功地應用於一系列和船舶操縱問題相關的粘性流動與水動力計算，得到了令人滿意的結果。 -
Based on the three prediction models, the combined forecast is conducted using the separate solutions of moving average, exponential smoothing and gray prediction to investigate whether the combined forecast model matches the sales volume prediction of truck wooden boxes
最後採用組合預測之三種預測模型，將移動平均法、指數平滑法、灰預測法所求得之解作組合預測，以探討組合預測模型是否適合木製框式車身的銷售數量預測。 -
Several research works are done in this paper according to the topics mentioned above : 1. looking up a lot of documents and materials about the microinjection technique, devices and the controlling technology of micro - fluid from outside and inside the country. based on the theoretical researches about the dna micro - fluid ' s dynamical characteristics, the controlling model of the microinjection volume is set up, and the experimental research on it is also done
圍繞上述內容，本文進行了以下幾方面的研究工作： （ 1 ）查閱並分析了國內外大量的轉基因微注射技術及操作設備和微流體控制方面的文獻，在對dna微流體的動力學特性理論研究的基礎上，進行了微注射量的理論建模及實驗研究。 -
The aim of this study is to investigate theoretically the possibility for activation of small mammalian myelinated nerve fibers without activating larger ones when stimulating a nerve fiber bundle with a monopolar point electrode using biphasic pulses, which can reduce the electrochemical damage resulted from stimulation pulses to nerve fibers. a simulation system for studying the electrical properties of mammalian myelinated nerve fibers was built based on a simple infinite and homogeneous volume conductor model. by use of an asymmetric but charge - balanced stimulation waveform, the sensitivity of excitation and blocking threshold of nerve fibers to fiber diameter, electrode - fiber distance was calculated. the results show that selective activation of small mammalian myelinated fibers may be possible in a region at some distance from the electrode using biphasic pulses
本研究的目的是要從理論上探討利用單電極雙向脈沖刺激實現哺乳動物神經纖維選擇性刺激， （即當刺激一束神經時，不興奮粗神經而興奮細神經）的可能性.雙向脈沖刺激可以降低刺激脈沖對神經纖維產生的電化學損傷.為研究哺乳動物有髓神經纖維的電特性，建立了一個基於簡單的無窮大、各向同性的容積導體模型的模擬系統.利用該模擬系統，採用「不對稱但電荷平衡」的雙向脈沖刺激，計算了神經纖維的興奮和阻斷閾值與纖維直徑、纖維-電極間距離的關系.結果表明：在距電極一定距離內採用該雙向脈沖刺激模式確實可以實現哺乳動物有髓神經纖維的選擇性興奮 -
Fifthly, based the established model of chloride induced rebar initiation corrosion time and the model of concrete cover cracking time due to corrosion products volume expanding, a probability based model is established for service life predicting of reinforced concrete structure in chloride environment. the prediction model regard corrosion induced concrete cover cracking matching the cracking limitation as durable limit state, or as termination of the component service life
第五，根據已建立的氯離子侵入混凝土導致鋼筋初銹的時間計算模型和混凝土中鋼筋銹蝕膨脹導致混凝土保護層開裂的時間計算模型，以保護層因銹蝕脹裂，裂縫寬度達到寬度限制值為耐久性極限狀態，建立基於概率極限狀態分析方法的構件耐久壽命預測方法。
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