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堆积效率
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  packing efficiency
     In this theory, the higher the packing efficiency is, the tighter the mud cake forms, and the better the plugging effect produces.
     依据连续颗粒堆积理论所提出的理想充填理论对提高钻井液的暂堵效果具有指导意义 ,颗粒堆积效率越高 ,越有利于形成致密的泥饼 ,对储层的暂堵效果也越好。
短句来源
     The “Ideal Packing Theory” and the d 90 rule used for optimizing the particle size distribution were elaborated by applying the principle of maximum packing efficiency. A new method beneficial to bridge and protect medium-permeability and high-permeability formations was proposed.
     应用颗粒堆积效率最大值原理 ,阐述了优选钻井液中暂堵剂颗粒尺寸的“理想充填”理论和d90 规则 ,提出了一种特别有利于对中、高渗透储层实施暂堵和保护的新方法。
短句来源
  “堆积效率”译为未确定词的双语例句
     The correlation demonstrates that the effect of miniral matter on the slurryability of coal has two aspects, i.e., negative contribution of dissolved ions and the positive contribution to the density.
     计算机分析表明,矿物对煤成浆性的影响有两方面:一方面是可溶性矿物对成浆性的不利影响,另一方面是矿物密度对堆积效率的有利贡献。
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  相似匹配句对
     Efficiency of "Eight-Part Essay
     “八股文”的效率
短句来源
     Photosynthetic Efficiency
     光合作用效率
短句来源
     Mathematical Model of heaped-up Gangue
     煤矸石堆积模型
短句来源
     (6) neutrophil accumulation.
     (6)中性粒细胞堆积
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  packing efficiency
Effects of kinematic viscosity of the slurry on the packing efficiency of PEEK microbore columns for liquid chromatography
      
The kinematic viscosity of the slurry used for the packing of microbore columns for liquid chromatography has been correlated with the packing efficiency.
      
Models based on packing efficiency related to the Boerdijk-Coxeter helix, explain, mainly from topological arguments, why the number of amino acids per turn is close to 3.6 in -helices and 2.7 in collagen.
      
The data are interpreted in terms of theH-bonds formed between neighbouring polymer chains which are thought to make for regions of high packing efficiency, interrupted at irregular intervals by more open regions of small size.
      
Starting from the structure of Ru3(CO)12, alternative crystal arrangements have been generated and compared with the experimental crystal structure in terms of packing efficiency and cohesive energy.
      
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Based on the determination of soluble inos in coal leaching liguid by ion chromatography and the CWS preparation experiments for ten coals with ash content ranging from 3.03% to 8.20%, a correlation of anion(SO_4~(2-)) to the slurryability(CFV) was set up through computer analysis. The correlation demonstrates that the effect of miniral matter on the slurryability of coal has two aspects, i.e., negative contribution of dissolved ions and the positive contribution to the density. Anion SO_4~(2-),instead of cations,...

Based on the determination of soluble inos in coal leaching liguid by ion chromatography and the CWS preparation experiments for ten coals with ash content ranging from 3.03% to 8.20%, a correlation of anion(SO_4~(2-)) to the slurryability(CFV) was set up through computer analysis. The correlation demonstrates that the effect of miniral matter on the slurryability of coal has two aspects, i.e., negative contribution of dissolved ions and the positive contribution to the density. Anion SO_4~(2-),instead of cations, is an important indicator in estimating the slurryability,for it is a total reflection of the effects of multivalent metallic ions in the system.

用离子色谱法对十种煤(其灰分为3.03—8.20%)浸出液中的阴阳离子进行了测定,考察了它们与煤的成浆性的关系。计算机分析表明,矿物对煤成浆性的影响有两方面:一方面是可溶性矿物对成浆性的不利影响,另一方面是矿物密度对堆积效率的有利贡献。实验表明,硫酸根离子对煤成浆性的影响尤为突出,它综合反映了高价金属离子的总影响。

To achieve a high packing efficiency of coal particles is one of the key know how for preparation of high density coal water fuel. It is also important in other industries such as building materials, powder engineering, coating, etc. And in agriculture. This paper systematically introduced the existing packing theories. In reality most particles are continuously distributed. None of the existing theories can calculate the packing efficiency of continuously distributed particles. The author proposed to cut...

To achieve a high packing efficiency of coal particles is one of the key know how for preparation of high density coal water fuel. It is also important in other industries such as building materials, powder engineering, coating, etc. And in agriculture. This paper systematically introduced the existing packing theories. In reality most particles are continuously distributed. None of the existing theories can calculate the packing efficiency of continuously distributed particles. The author proposed to cut the continuously distributed particles into various particle gradations of different sizes based upon ratio of particle size and pore size. A computer model is set up to do random interlayer packing simulation and calculate the packing efficiency .By using this model, one can calculate the packing efficiency of any particle size distributions.

颗粒粒度分布的堆积效率是制备高浓度水煤浆的关键技术之一 ,在建材、化工、粉体工程、涂料等工业及农业中的土壤等学科领域也十分重要 .由于实际粒度分布多属连续分布 ,现有理论还不能解决连续分布堆积效率的计算 .针对这一问题 ,提出了对连续分布先作离散处理 ,再按粒径与孔径比划分成若干窄级别 ,在计算机上进行隔层随机模拟堆积 ,计算任一粒度分布堆积效率的方法 .

The effects of the size distribution of coarse-fine binary particles and the volume fraction of fine particles on the vibratory packing efficiency and porosity of NiFe_2O_4-spinel powder were studied according to the Furnas model and linear packing density theory. It was found that the vibratory packing efficiency is higher whereas the porosity is lower when the size ratio (R) of coarse particles to fine particles increases. In addition, the vibratory packing efficiency reaches its peak value when the volume...

The effects of the size distribution of coarse-fine binary particles and the volume fraction of fine particles on the vibratory packing efficiency and porosity of NiFe_2O_4-spinel powder were studied according to the Furnas model and linear packing density theory. It was found that the vibratory packing efficiency is higher whereas the porosity is lower when the size ratio (R) of coarse particles to fine particles increases. In addition, the vibratory packing efficiency reaches its peak value when the volume fraction of fine particles is 03~04. Comparing the experimental results of which the widest distributed group of granularity was chosen, i.e., the coarse particle size is 100~085 mm, to the values calculated by Furnas model, it was found that Furnas model suits the NiFe_2O_4-spinel powder system when the size ratio R is equal to or less than 5. But when the size ratio R is equal to or more than 7, the parameter C_2 in Furnas model is preferably to be changed to 6.

根据Furnas模型及线性堆积理论,研究了两种粒径颗粒的级配及细颗粒体积分数对NiFe2O4尖晶石基料振实堆积效率及空隙率的影响,发现随着粗细颗粒粒径比(R)的增大,NiFe2O4尖晶石基料振实堆积效率(E)也相应增大,空隙率减小,且当细颗粒体积分数为30%~40%时,体系的振实堆积效率最大·将粒度分布最宽即粗颗粒尺寸为1 00~0 85mm的试验结果与理论计算值相比较,发现当R≤5时,Furnas模型适用于该体系,但当R≥7时,Furnas模型中的参数C2为6时更适合·

 
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