phase volume fraction 中文意思是什麼
phase volume fraction
解釋
相體積分數-
Bismuth ruthenate and silver were selected as conductor phases and the mixture of calcium oxide - alumina - silicon dioxide ( cao - al _ 2o _ 3 - sio _ 2 ) glass and lead oxide - boron oxide - silicon dioxide ( pbo - b _ 2o _ 3 - sio _ 2 ) glass was selected as inorganic binder phases. it was found that, with the increasing of volume fraction of silver and conductor phase, sheet resistivities descend and there are critical thresholds
實驗發現，隨著功能相百分含量的增加，電阻膜層的方阻值逐漸減小，存在兩個臨界閾值，電阻溫度系數偏向正值;功能相中銀百分含量增加，膜層的方阻值逐漸減小，有一個臨界閾值，電阻溫度系數偏向正值。 -
It is firstly found that for alloys in metastable region, with enhancement of atomic interaction energy, volume fraction and density of " phase particulate are increased, size and nucle ' ation rate of ordered phase raised, decline pace of composition in disordered matrix around the order phase is accelerated, composition order parameter and long range order parameter of ordered phase increased, i. e. process of clustering and ordering are accelerated
首次發現，隨著原子間相互作用勢的增加，亞穩區合金中有序相的體積分數和顆粒密度有所增加，有序相的尺寸和形核率有所提高，有序相周圍的無序基體濃度的降低有所加快，有序相內的成分序參數和長程序參數有所提高，即促進了原子簇聚過程和有序化程度。 -
Advanced technical ceramics - monolithic ceramics - general and textural properties - determination of phase volume fraction by evaluation of micrographs
高技術陶瓷.整體陶瓷.一般的和表面結構特性.通過顯微攝影圖評估測定相體積分數 -
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。 -
The effect of solidification rate on the solidified structure, cooperation growth zone and microstructures such as tac rods volume fraction, tac rods average spacing, tac average transverse area and y phase in this eutectic composite were systematically investigated with lmc. the relationship between solidification processing controlling and solidification microstructure was established
藉助金相技術、電鏡技術、圖象處理技術等多種分析測試手段，考察試樣的界面形態、組織特徵以及共晶形貌等多方面的凝固特性，建立了凝固過程式控制制與凝固組織的對應關系。 -
Result of numerical simulation shows that the grads of continuous phase " s velocities decreases with the presence of microbubble of which the diameter is 100 / / w, the profiles of air volume fraction in the boundary layers is similar to triangle or echelon, affected by interaction among the particle, there is a saturated air fraction, within the scope of saturated air fraction, increasing the air injection ratio can accrete the friction reduction ratio, under the condition of same air injection ratio, the free - steam velocity is larger, the effect of friction reduction is worse
計算結果表明，直徑為100 m的微氣泡能減小近壁面連續相的速度梯度；微氣泡在邊界層中的濃度分佈近似為三角形或梯形分佈；受粒子間相互作用的影響，存在一飽和濃度；減阻率隨噴氣量的增大而增大，直至飽和噴氣量，此後，增大噴氣量，壁面摩擦阻力變化不大；相同噴氣量下，來流速度越大，減阻率越低。 -
The precipitation sequence in instable region is as follows : supersaturated solid solution congruent ordering spinodal decomposition stoicheometric phase it is found for the first time that with the increase of compositions, congruent ordering is enhanced, incubation period is shortened, spinodal decomposition is decreased, and volume fraction of ordered phase is increased
失穩區合金沉澱序列為：過飽和固溶體（ ? ）非化學計量比有序相（ ? ）化學計量比相等成分有序化也需要孕育期，首次發現隨初始濃度的增加，孕育期縮短，等成分有序化速度加快，而失穩分解的速度相對減慢，有序相體積分數增加。 -
Three models are proposed as follows by applying the model of " mixed flow " : the stress of increasing fluid on fouling, collision between solid particles and fouling, and solid particles movement velocity ; the effects of operating parameters, properties of particles, and the volume fraction of particles on stress in solid - liquid two phase flow, collision stress between solid particles and fouling, maximal contacting area between solid particles and fouling and maximal contacting time between solid particles and fouling are investigated systematically by calculating and theoretical analysis
利用「混流」模型，建立了兩相流體的剪應力模型、固體顆粒與垢層的碰撞模型和固體顆粒的運動速度模型；通過計算和理論分析，系統地考察了操作參數、顆粒物性、顆粒體積分率等對固液兩相流剪應力、顆粒對垢層的碰撞力、顆粒與垢層的最大接觸時間和最大接觸面積的影響。 -
Secondly, for the first time, by volume average concept and reynolds time - average method, a 3d quasi - single phase mass transfer model of distillation tray is deduced by considering the effects of velocity fluctuation, concentration fluctuation and volume fraction of gas and liquid on mass transfer. a source item sc for interphase mass transfer is considered. by applying conventional method of estimating the interphase mass transfer coefficient, a formula for sc is obtained
其次，採用體平均概念、雷諾時均化方法結合塔板氣液相互作用的實際情況首次推導了考慮速度、濃度脈動項和氣、液相含率影響的塔板三維擬單相流湍流傳質模型，源相中考慮了氣液相間傳質項sc ，並運用化工中關于相間傳質系數計算的理論，推導了sc的表達式。 -
Advanced technical ceramics - monolithic ceramics ; general and textural properties - part 5 : determination of phase volume fraction by evaluation of micrographs ; german version env 623 - 5 : 2001
高技術陶瓷.整塊陶瓷.一般性能和結構性能.第5部分:通 -
But during the process of in situ reaction, in addition to the reinforced phase, composite will exit the other by - product ( such as fragility phase alsti and al4c3 ), mean while, it is difficult to control the volume fraction of tic particles accurately, and lead to poor stability of material property
但是目前在原位反應時，除了所預計生成的增強體外，仍會生成其它副反應夾雜物（即脆性相al _ 3ti和al _ 4c _ 3的生成） ，同時對增強體tic顆粒的體積分數也難以精確控制，因而影響材料質量的穩定性。
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