particle concentration 中文意思是什麼
particle concentration
解釋
含塵濃度- particle : n 1 顆粒，微粒；微量，極少量。2 【物、數】粒子，質點。3 【語法】虛詞，不變詞〈冠詞、副詞、介詞、...
- concentration : n. 1. 集中。2. 【化學】提濃，蒸濃，濃縮；濃度；稠密度；【礦物】汰選，選礦，富化。3. 集中注意，專心。
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Exafs studies on particle concentration effect and adsorption reversibility of zn onto anatase tio
2體系的顆粒物濃度效應和吸附可逆性 -
Experiments in pneumatic conveying show that there exists a maximum particle concentration.
氣力輸送實驗表明，這里存著一個最大的顆粒濃度。 -
The research aims at the demonstration and the mend of the design on the new purifier and presents a calculation method for solving the two - phase flow in fluid machine by the finite element method. after analyzing the two - phase flow in the new purifier by means of the continuum model, poisson equation, navier - stokes equation and continuous equation are derived and solved by using the finite element method. the solution on pressure, velocity and particle concentration simulates the departure well between oil and water, which proves the accuracy of the design on the new purifier
本文採用兩相流連續介質模型，由兩相分離流動理論得到控制方程，採用chorin的直接速度-壓力mac法的思路，對新型油水分離裝置內油水兩相流動作了細致的分析，同時首次把科氏慣性力引入兩相流模型中，進行分析和計算，將研究擴展到三維，並用有限元法分別解poisson方程、 n - s方程、連續方程的方法，對流場內壓力場、速度場、濃度場進行了分析和計算，較好地模擬了新型油水分離裝置內油水分離的現象，證明了設計方案的正確性。 -
On the basis of theory analysis, the average transmitted light intensity ( correspond to dc value ) was determined as characteristic parameter of raw water using photoelectric method for monitoring the fluctuation of transmitted light and photometric dispersion analyzer ( pda ). the dc value was closely related to both particle concentration and surface area of sand clay simultaneously. the experimental results shows that there is an exponential function relation between dc and surface area of sand clay in unit volume water ( sp ) : dc = asbp in which a and b are empirical coefficients. then the formula of macromolecule flocculant dosage is found to be d = f ( dc ) = e ( dc ) f in which e and / are empirical coefficients and the average correlation coefficient equal to 0. 981. so the model of automatical control system of water treatment plant was established using the formula
應用透光率脈動檢測技術和光散射顆粒粒度分析儀（ pda ） ，通過理論分析，將pda的輸出信號之一? ?平均透光強度（對應于dc值）作為原水的特性表徵參數， dc值可以同時反映顆粒濃度和比表面積因素的影響，試驗結果證明， dc值與單位體積水中泥沙顆粒總表面積s _ p之間具有很好的冪函數關系： dc = cs _ p ~ d ，式中c 、 d為經驗系數，進而得到了以dc值為參數的高分子絮凝劑投藥量公式： d = f （ dc ） = e （ dc ） ~ f ，式中： e 、 f為經驗系數，平均相關系數達0 . 981 ，利用所建立的公式，建立了前饋? ?后饋聯合控制的在線自動投藥模型。 -
Methods for testing the performance of dust particle counter - particle concentration
塵埃粒子計數器性能試驗方法顆粒數濃度 -
The conclusion obtained from experimental result showed that particle concentration is an important factor on inhibitor ablation
試驗結果表明：粒子聚集濃度是絕熱層燒蝕的重要影響因素。 -
The particles aggregation was simulated using particle - cluster and cluster - cluster aggregation model. several type of floes was reached and its morphological characteristics was analyzed the fractal dimension, density and porosity of floes was studied by changing sticking probabilities, sticking position, particle number, particle concentration, difrusion coefficient and motion trajectory. the parameters by which special floes growth were determined. in the study of morphology, floes of yellow river ' s loess particles was observed by tv - microscope. its morphological characteristics were obtained by image analysis. the effect of fractal dimensions by stirring time strring speed, macromolecule flocculant dosage, flocculant concentration and particle concentration was studie. its rule of change was obtained. on the basis of other studies, the flocculation kinetics and floes structure was studied
本文應用計算機模擬技術，在二維空間內採用單體凝聚和集團? ?集團凝聚兩種模型對顆粒凝聚過程進行了模擬，得到了多種形態的絮體，並對絮體進行了形態分析，通過改變粘附概率、粘附位置、顆粒數量、顆粒濃度、擴散系數和運動路徑等模擬參數，我們考察了絮體分形維數、密度和孔隙率隨模擬條件變化的影響規律，得到了形成特定形態絮體的控制參數。 -
The particle collision frequencies and granular temperature as a function of particle concentration were obtained
得到了顆粒碰撞頻率和顆粒溫度隨顆粒濃度的變化規律。 -
The radial distribution function was introduced in order to take into account the effect of the uneven local particle concentration on the particle collision probability
推導了高顆粒濃度氣固兩相流顆粒間碰撞概率的計算公式，引入徑向分佈函數來考慮局部顆粒濃度不均勻性對顆粒碰撞概率的影響。 -
3. the numerical result indicated that particle distribution alone surface of inhibitor was enslaved to particle diameter. particle concentration changed from single - peak distribution to multi - peak distribution according to particle size increase
（ 3 ）數值計算表明兩相流中粒徑對絕熱層表面粒子濃度分佈有很大的影響，且隨著粒徑的增大粒子濃度由單峰分佈變為多峰分佈。 -
It is found that the size of the internals is an important influencing factor, the larger internals under moderate gas velocity are more perferiable for increasing the particle concentration and improving the gas - solid mixing pattern on the section
較大尺寸的內構件在適當的表觀氣速時能夠對改善流場中氣固混合及提高截面濃度起到非常積極的作用。 -
By investigating the specialty of functions in the expression, the following conclusion was drawn : particle concentration was the dominant factor that enforced ablation, and angle contributed to ablation via cutting the char layer
通過分析關聯式中各項函數特性，得到粒子聚集濃度是影響燒蝕量的主要因素，而角度對于燒蝕量的貢獻主要體現在對絕熱層炭層的剪切破壞上的結論。 -
The experimental results illustrate that " particle - concentration effects " for trace metals reported in literature are mainly due to the particle dynamics in the estuary. 4. the adsorption percentage ratios of adsorptions and partitioning coefficients for trace metals in the changjiang estuary decease significantly with higher concentrations of elements
這一模擬研究結果說明，通常文獻報道的在河口混合區某些情況下的微量金屬固-液分配的所謂「顆粒物濃度效應」主要與河口現場泥沙顆粒的物理動力學過程有關。 -
For the first time, the oriented percolation model is applied to analyzed the critical particle concentration of 0. 37 and which is characterized an electrorheological fluid and independent to the external electric field
同時得出，分形維數（ d _ f ）與外加電場性質無關，但隨微粒的體積百分數增加而趨近於dla生長模式的特徵值1 . 8 。 -
Particle concentration in the ambient air still keeps at relatively high level while the concentration of other pollutants has come close to or already met the national standards
目前，北京市主要大氣污染物中，顆粒物濃度一直居高不下，其它污染指標已接近或達到國家標準。 -
However, the effect of high particle concentration on particle collision should be taken into account in the dense gas - solid two - phase flow. at the same time, gas turbulence should be taken into account in the simulation of gas flow in dense gas - solid two - phase flow
然而，在高顆粒濃度下顆粒碰撞對的確定需要考慮高顆粒濃度存在的影響，同時在高顆粒濃度流化床氣固兩相流動中，需要考慮氣體粘性的作用。 -
Based on a large amount of experimental data, nonlinear analysis, such as complexity theory, and approximate entropy ( apen ) which is adopted systematically in the fluidization research the first time, are implemented in the time series analysis of pressure fluctuation and particle concentration in gas - solid fluidized beds, and the nonlinear characteristics of fluidized beds are discussed comprehensively
本文在大量實驗數據基礎上，將非線性方法，包括復雜性理論，以及首次被系統引入流態化研究的近似熵，應用到氣固流化床壓力及顆粒濃度脈動時間序列分析中，較為系統地探討了流化床的非線性特徵。 -
The output signal of pda is affected by the suspended particle concentration, particle size, and the type and dosage of coagulant as well. by analysing the fi curve, it is found that the characteristic parameters of fi curve closely relate to aggregates size and turbidity removal the aggregates size and turbidity removal achieve the maximum when the amplitude of fluctuation is the maximum. the mean diameter and fractal dimension increase with agitation time, and finally reach a steady - state
通過對混凝過程的在線監測和對pda輸出信號fi曲線的數學解析表明： fi曲線綜合反映了懸濁液中膠體顆粒濃度和顆粒粒徑，混凝劑種類和投量很大程度上影響了fi曲線形狀， fi曲線的特徵值與絮凝體平均粒徑和濁度去除率之間具有良好的相關關系，在振幅最大處，濁度去除率達到最高，絮體平均粒徑最大，該條件下對應的投藥量為最佳投藥量。 -
The vertical distribution of particle concentration is nearly linear, and the concentration at the bottom is 3 times larger than that at the top, which indicates that ca, the reference concentration of suspended particles in einstein ' s equation, is larger
2u * ；顆粒的濃度沿垂線基本為線性分佈，底部比上部大3倍左右，說明einstein取的懸移質參考濃度ca會有所偏大。 -
Based on the analysis of characteristics of sediment particle concentration distribution, it is pointed out that the diffusion theory can describe sediment concentration distribution in main flow region but cannot explain sediment concentration distribution law near bottom because of the existence of sediment colliding shear stress
摘要在分析泥沙顆粒含量分佈特性的基礎上，指出擴散理論能較好地描述主流區的泥沙含量分佈規律，但在近底流區由於泥沙碰撞切應力的存在，使得擴散理論不能解釋此區域的泥沙含量分佈規律。
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