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mass balance 質量平衡。

mass bargaining

In order to understand the effects of drainage ditches on the biogeochemical cycling in wetland , this paper takes the sanjiang plain as an example , and makes a detail introduction to the impacts of drainage ditches on the characteristics of movement , transformation , inputs and outputs of chemical elements and on the chemical mass balance 以三江平原濕地為例,從溝渠對濕地化學元素遷移轉化、濕地化學元素輸入輸出和濕地化學質量平衡影響方面分析了溝渠對濕地生物地球化學循環的影響。

The paper firstly introduces three different approaches for the kinetic modeling of supercritical fluid extraction ( sfe ) ( empirical models , models based on the heat transfer analogy , and models based on differential mass balance ) , and then models kinetic process of the sfe of flavonoid compounds from cedrela sinensis leaves in the presence of ultrasonic , at last shows the defects existed in most of the contemporary kinetic models through the example 摘要首先介紹了三種動力學模擬超臨界流體萃取的模型(經驗模型、基于熱傳遞類推的模型以及基于微分質量平衡的模型) ,然后模擬了在超聲存在的條件下超臨界流體從香椿葉中萃取黃酮類化合物的動力學過程,最后通過該例子展示了現有大多數動力學模型的缺點。

Abstract : the paper firstly introduces three different approaches for the kinetic modeling of supercritical fluid extraction ( sfe ) ( empirical models , models based on the heat transfer analogy , and models based on differential mass balance ) , and then models kinetic process of the sfe of flavonoid compounds from cedrela sinensis leaves in the presence of ultrasonic , at last shows the defects existed in most of the contemporary kinetic models through the example 文摘:首先介紹了三種動力學模擬超臨界流體萃取的模型(經驗模型、基于熱傳遞類推的模型以及基于微分質量平衡的模型) ,然后模擬了在超聲存在的條件下超臨界流體從香椿葉中萃取黃酮類化合物的動力學過程,最后通過該例子展示了現有大多數動力學模型的缺點

Considering the mass balance law for solute , and combining with the populance balance model and the mccabe ' s l law , a linear crystal growth rate model was presented for potassium nitrate aqueous system . the test variables of both the liquid and solid for kinetic parameter estimations were given on this model , and the experimental apparatus were also set up 基于粒數衡算模型,以kno _ 3 - h _ 2o為模型研究體系,根據結晶過程中溶質質量守恒和mccabe定律,首先建立了晶體線性生長動力學模型,并確定出動力學參數估計所需要表征的固液兩相物理參數,進而建立了實驗表征方法和測定裝置。

In order to avoid the drawback of the traditional data reconciliation model , an improved model is proposed in this thesis . some new constraints for the ratio of measurement data are added to the new model , and the constraints of mass balance are transformed into soft constraints by using the method of penalty function 針對傳統數據協調模型的缺陷,通過添加一組基于測量值比例關系上下限的約束條件,并利用罰函數的概念將物料平衡的約束條件以軟約束的形式表示,由此建立了一種新的數據協調模型。

In this paper , we aim at establish heat and mass coupled transfer model in the building wall , , the emphasis of this study lies in creating a coupled and non - linear diferential equation system for the heat air and moisture transfer in the wall , which can be described by means of continuum mechanics and irreversible thermodynamics , the most dominant factor is moisture conten 9la gas pressure pc and temperature t , for the description of heatair and moisture transport , the general mass balance equation can be expressed by the temporal change of moisture conten 9 l , gas pressure pc and temperature t that means , in order to create a closed solvable equation system , the other additional dependencies have to be found , which the other variable depending on the variables of the solution : moisture conten 6 l gas pressure pc and temperature to the model is verified by the numerical simulation software which has been developed about building wall . , 根據節能設計要求,本文用熱力學的方法,并根據多孔介質中多相流體流動描述方面的最新研究成果? ?體積平均方程,建立了墻體熱、濕和空氣耦合熱質傳遞模型,并推導出熱、濕和空氣耦合傳遞等效擴散方程;找到建筑墻體熱、濕及空氣耦合作用下熱質傳遞過程的主要影響因素濕容量_ l 、氣壓p _ c和溫度t 。開發了單體材料墻體熱質傳遞數值模擬軟件,用實測數據對軟件進行調試并對模擬計算結果進行了驗證。模擬出了單材料墻體在熱、濕和空氣耦合作用下建筑墻體內的溫度和濕度分布規律。

Then in order to dealing with the low redundancy of process industry sensor network , the procedure of building an accurate and efficient quasi - steady - state linear mass balance model is discussed in three steps : rough model establishment , model impovement and model validation . 2 然后針對流程工業生產流程網絡的低冗余性,從初始模型的建立、模型的改進、模型的檢驗和校正這幾個方面詳細探討了如何從生產流程的網絡結構建立一個準確而有效的線性準穩態物料平衡模型。

The system is described mathematically on the basis of mass balance , energy balance , and phase equilibrium . the model of process simulation of the aht system is set up . the solution system of mathematical model of absorption cycles was put forward 對吸收式熱變換器( aht )的基本原理和行為特征在系統層次上進行了分析,進而根據質量平衡、能量平衡和相平衡方程對系統進行數學表述,建立了系統的過程模擬模型,并提出了aht吸收循環數學模型的求解機制。

The main ideas in this dissertation are motivated from industry applications , which are listed as follows : 1 . quasi - steady - state linear data reconciliation is defined for mass balance of a whole factory by taking the storage capacity of devices into consideration 以全廠物流數據協調為背景,針對流程工業特性,綜合考慮容性節點貯液量的動態變化,引入了線性準穩態數據協調。

Applying the mass balance and the reaction equilibrium theory , a dynamic model of carbon content and temperature variation of bof steelmaking process based on the continuous data from the exhaust gas analysis system was built 摘要根據物料平衡及反應平衡原理,利用爐氣分析系統在線連續檢測、分析數據,建立了轉爐冶煉過程中碳含量及溫度變化的動態模型。

Based on the dust mass balance equation and the ventilation styles in the textile workshop , puts forward the theoretical relationship between the mechanical ventilation rate and the pressure in the workshop 摘要在粉塵質量平衡方程基礎上,建立了紡織車間通風狀況與壓力分布的理論關系式。

For the mass balance equations , the average mechanical denudation rates would be estimated based on chemical weathering rates for the major basins of china 研究發現綜合巖性整體上控制了中國主要流域盆地化學風化率的大小,但化學風化率一定程度上也受制于流域巖石的化學風化進程。

The most important criteria that used to check the calibrated model are root mean square error ( rms ) , the mean absolute error normalized rms error , and mass balance 模型參數使用試錯法識別,識別過程中最重要的指標是均方差、平均絕對誤差、標準均方差和水均衡。

The secco plant has little storage for products feeds between process units so maintaining a good mass balance across the plant is very important 賽科在裝置之間很少設置產品和原料的儲存,故裝置間保持良好的物料平衡是至關重要的。

Coordination of mass balance ( hydrocarbons , steam , water , electricity , etc ) between the various process units 協調生產裝置間的物料平衡,包括烴類物料,蒸汽,水,電等。

Boundary conditions were obtained by energy , mass balance relationship on insulation surface 邊界條件通過燒蝕界面上的能量、質量守恒關系得出。

Produce daily mass balances of secco unit , utility and product reticulations 制作賽科裝置的每日物料平衡,公用工程平衡及產品網的平衡。

Mass balance geochemistry of the red earth in southern china and its environmental implications 南方紅土元素遷移特征及其古環境意義

Mass balance equation 質量平衡式