bed particle size 中文意思是什麼
bed particle size
解釋
底沙粒度-
Using sawdust as raw material, under the condition of 2 % - 4 % opening rate of distributor, the effects of particle size and sawdust bed height on fluidization velocity in cold bubbling fluidized bed were determined
摘要冷態條件下，在鼓泡流化床中採用木屑為原料，分佈板在2 % ~ 4 %不同開孔率的條件下，分別考察了原料粒徑和床層高度對木屑流化速度的影響。 -
The results of this experiment showed that pressure drop and flow velocity are related in quadratic function ; the effects of opening rate of distributor sad bed height on critical fluidization velocity are rather slight, while the effect of particle size on critical fluidization velocity is very obvious
得出結論：分佈板壓降和流速成二次函數關系；以木屑為原料，分佈板開孔率和床層高度對臨界液化速度的影響不大，粒徑分佈對臨界流化速度隨粒徑的增大而增加。 -
Based on the topographic features and data of sediment particle size of bed load at the fluctuating backwater reach of liujiaxia reservoir, the streamwise variation and variation process of median diameter of bed load during silting and scouring periods of the fluctuating backwater reach are analyzed, and it can be seen that the turning point for the sediment diameter variation from coarse to fine is located at the outlet of shigou gorge of the fluctuating backwater reach
摘要根據劉家峽水庫變動回水區的河段地形特徵和歷年河床質泥沙粒徑級配資料，分析了變動回水區河段淤積和沖刷時，河床質泥沙中值粒徑的沿程變化和歷年河床質泥沙中值粒徑變化過程，並指出粒徑分佈由粗變細的轉折點在變動回水區寺溝峽峽口處。 -
The experiments show that the main origins of causing the oil and water zones complicated in the study area on the one hand is pore structure, fine particle size and shale content high, resulting in saturation of irreducible water of the reservoirs varying greatly, on the other hand is mud invasion influence, resulting in the reservoir receptivity decreasing, and the third is the thin bed is restricted by logging resolution, resulting in measure value influenced by the bed thickness
研究得出，研究區復雜油水層主要成因一是儲層孔隙結構復雜，巖性細，泥質含量高，導致儲層束縛水飽和度變化大；二是泥漿侵入影響，導致油層電阻率降低；三是薄層受測井分辨能力的限制，其測量值受層厚影響。 -
The use of the urea fluid bed unit will efficiently solve the problems arisen from the inadequate capacity of the prilling tower, such as the higher temperature of the product urea, higher dust content, smaller mean particle size, and liability to caking in storage, and bring about good economic benefit
摘要應用尿素流化床裝置有效解決了因造粒塔能力不足而造成的成品尿素溫度偏高、粉塵含量較高、平均粒徑偏小、存放易結塊等問題，並且具有良好的經濟效益。 -
The measurement was made on a gas - solid fluidized bed in our laboratory. the pressure fluctuation signals were obtained and analyzed through power spectrum density. the relation of the particle size to pressure fluctuation and other parameters was studied by using fuzzy set theory
在實驗室條件下對氣-固流化床的顆粒進行了測量，通過功率譜密度對所獲得的壓力波動進行了分析，並應用模糊集理論對顆粒尺寸與壓力波動及其它影響參數的關系進行了研究。 -
The conclusions are as follows : ( 1 ) high - pressure water - atomization can be used to produce a pre - alloyed steel powder with high apparent density, high green strength, size - stability after sintering and low hydrogen - loss content ; ( 2 ) the higher smelting temperature and / or water pressure, the finer particle size of steel powders ; ( 3 ) when the atomization angle holds in a reasonable value ' s range the obtained powder will have a better particle size distribution ; ( 4 ) an optimum atomization technological parameters : liquid steel flux, water pressure and water prick angle was obtained ( 5 ) reduction variables ( temperature, holding time, material - bed ' s thickness and reducing gas flux ) have a significant effect on the particle agglomeration and properties of final powder was given ( 6 ) different alloying methods were developed to modify properties of ferrous powder materials and hence to broaden its applications in ferrous powder metallurgy industry
本文系統研究了水霧化預合金鋼粉生產工藝及合金化方法對鐵基粉末冶金材料性能影響，詳細研究了冶煉、霧化、還原工藝參數對預合金鋼粉化學成份和物理性能影響，並得出如下結論： （ 1 ）採用高壓水霧化技術可用於生產高密度、高強度、尺寸穩定性的低氫損含量的水霧化預合金鋼粉。 （ 2 ）冶煉溫度越高，高壓水壓力越大，所得生粉顆粒粒度越細。 （ 3 ）水錐角調整在一個適當角度范圍內可獲得粒度組成較好的生粉。 -
The vibrated fluidized bed granulation will effectively overcome these disadvantages of wide distribution of particle size and high dissipation of energy, existing in the traditional fluidized bed and the spout - fluidized bed. the granulation technique in vfb is especially suitable for the medium and small scales process of layering granulation
振動流化床造粒可有效克服傳統流化床或噴動床造粒顆粒粒度分佈寬、動力消耗高的缺點，特別適合於中小生產規模的層式造粒過程。 -
This thesis is aimed to study the flow field in circulating fluidized bed ( cfb ) holier in cold state based on the system of particle image velocimetry ( piv ), several parts are included : the distribution of particles velocity in cfb boiler including radial velocity and axial velocity of particles ; the average radial and axial concentration distribution of particles in cfb boiler ; the average radial and axial size distribution of particles in cfb boiler
本文採用piv系統對循環流化床鍋爐冷態流場進行了試驗研究，研究的主要內容包括：循環流化床冷態流場粒子的速度分佈特性，包括粒子的徑向速度和軸向速度分佈；循環流化床顆粒的平均濃度沿徑向和軸向分佈特性；循環流化床顆粒平均粒徑的軸向和徑向分佈特性。 -
Abstract : a new fuzzy measuring model for the average particle size in fluidized bed is described in this paper
文摘:本文建立了一種對流化床中顆粒尺寸進行測量的模糊模型。 -
According to the similar rule, a movable bed model for downstream channel and the particle size distribution of the model silt in the channel and the scour hole are designed. a theoretical method of size distribution in the scour hole is devised
根據模型律設計了太平灣尾水渠動床模型，分別確定了河床中和沖刷坑中模型沙的配比，並對沖坑中的床質級配進行了理論推導。 -
In the near bed region, the turbulent intensities are elevated above those of water at a rate proportional to particle size due to collisions and velocity gradient
床面附近，顆粒脈動強度大於流體的脈動強度，且粒徑越大，脈動強度越大。
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