查询词典 separation

Similarly, if the strong shear, which could suppress all the scattering in the quiescent two phase region, stopped, the follow-up phase separation also displayed characteristics of anisotropism and relaxation, In this dissertation, the transposed"butterfly'and"streakpattern were observed for the first time within the shear-history-influenced phase separation, which is found closely relevant to the anisotropical relaxation behavior of macromolecules. 5. The phase separation kinetics of PS/PVME under oscillatory shear was further studied on the base of that done under simple shear. It is found that, under specific temperature and strain amplitude, the occurrence of phase separation is strongly contingent on oscillatory frequency and only intermediate frequency could effectively induce phase separation; If all considered oscillatory shear could stimulate phase separation, a fixed frequency can maintain specific most probable phase size and higher frequency yields smaller phase, which makes a higher elasticity but weaker stress relaxation; Furthermore, higher frequency can produces stronger compulsory oscillation on the MPPS but won't change the mean of the MPPS. Under given frequency and strain amplitude, the phase separation kinetics dramatically depends on the phase angle of oscillation and the phase separation corresponding to different phase angle follows different dynamical process.

在简单剪切场下相分离动力学研究的基础上进一步对振动剪切场下PS／PVME的相分离动力力学进行了尝试性的研究，发现：在一定温度和振幅条件下，相分离的发生强烈的依赖于振动频率，只有中等频率的振动剪切才能有效地促进相分离的发生；在都能使相分离发生的前提下，一定频率的剪切能够使体系维持一定的最可几相尺寸，较高频率的剪切导致体系形成的相区尺寸较小，因而体系的弹性效应较强而应力松弛效应较弱；同时，更高频率的剪切对最可几相尺寸的强迫振动效应越强，但不会使最可几相尺寸的平均值发生改变；在一定的振幅和频率条件下，相分离的动力学过程会强烈地依赖于相位角，不同相位角对应的相分离遵循不同的动力学过程但机理一样。

Using culture medium selection, diluted separation, plate lineration, centrifugal separation, capillary separation, droplet separation, pH separation, temperature separation, inhibitor separation and so on, ten species were obtained. There were Cyanophyta Nostoc punctiforme, Phormidium tenue, an undetermined alga; Chrysophyta Chromulina ovalis; Chlorophyta Cholorella ellipsoidea, Scenedesmus bijuga, S. quadricauda, Elakatothrix sp., Selenastrum minutum and Bacillariophyta Navicula sp.

采用培养基筛选法、稀释分离法、平板划线分离法、离心分离法、毛细管分离法、小滴分离法、pH值分离法、温度分离法、抑制剂分离法等9种不同方法，最终分离纯化出4门9属10种藻类，其中包括蓝藻门念珠藻属的点形念珠藻、席藻属的小席藻和一未定种；金藻门单鞭金藻属的卵形单鞭金藻；绿藻门小球藻属的椭圆小球藻、栅藻属的双对栅藻和四尾栅藻、纺锤藻属的一种、月牙藻属的小形月牙藻和硅藻门的舟形藻属的一种。

The results indicated that: the water content of product decreased from 2580 PPm to 50 PPm by sweep gas method in the water/chloromethane system and the separation factor of water/chloromethane was 74800; the water content of product decreased from 2580 PPm to 36 PPm by vacuum method in the water/chloromethane system and the separation factor of water/chloromethane was 32500; the separation factor and the flux of the dehydration of dichloromethane were 39900 and 0.172 kg·m~(-2)·h~(-1),respectively; the separation factor and the flux of the dehydration of trichloromethane at 50℃were 57300 and 0.564 kg·m~(-2)·h~(-1), respectively; the separation factor and the flux of the dehydration of carbon tetrachloride at 60℃were 68200 and 0.612 kg·m~(-2)·h~(-1),respectively.

结果表明：利用吹扫气法，对于水/一氯甲烷操作体系，其分离因数高达74800，产品水含量由进料侧的2580 PPm，降低到50 PPm；利用抽真空法，对于水/一氯甲烷操作体系，其分离(来源：93ABC论9090文网www.abclunwen.com)因数高达32500，产品的水含量由进料侧的2580 PPm，降低到36 PPm；对于二氯甲烷脱水体系，水/二氯甲烷分离因数和渗透通量分别为39900和0.172 kg·m~(-2)·h~(-1)；对于氯仿脱水体系，操作温度为50℃时，水/氯仿分离因数和渗透通量分别为57300和0.564 kg·m~(-2)·h~(-1)；对于四氯化碳脱水体系，操作温度为60℃，水/四氯化碳分离因数和渗透通量分别为68200和0.612 kg·m~(-2)·h~(-1)。

MIRV missile separation rule was built. Preliminary optimum design and optimize separation sequence were carried out. According to target attacking sequence and separation sequence which are preliminarily certain, the optimum separation sequence was determined by building compatibility rule of target attacking sequence and MIRV missile separation sequence.

结合多弹头导弹弹头特性建立了子弹头的分导原则，对子弹头的分导顺序进行了初步设计与优化根据确定的目标打击顺序和优化的子弹头分导顺序，建立目标打去顺序与子弹头分导顺序的一致性原则来确定子弹头的最佳分导顺序。

Studied the solid particles cyclone separation under structural parameters and operating parameters of different hydrocyclone, the results showed that major factor influence split ratio is in the ratio of entrance to exit pressure of hydrocyclone. Exit pressure has a certain influence on the split ratio, the various of the diameter and cone angle of hydrocyclone (in the ratio of entrance to exit pressure is constant) have no influence on split ratio; With diameter and cone angle increase, the separation granularity gradually increasing and recovery ratio decreasing; With entrance pressure increase, the separation granularity of hydrocyclone decrease, the split ratio of underset will increase slowly; With the diameter of overflow pipe increase, the separation granularity of hydrocyclone increasing and recovery ratio decreasing; With the diameter of underset pipe increasing, the separation granularity of hydrocyclone decreasing and recovery ratio increasing.

在不同的水力旋流器结构参数和操作参数下，对固体颗粒的旋流分离进行了分析研究，结果表明：旋流器的排出口比是影响分流比的主要因素，进口压力对分流比有一定影响，水力旋流器的直径变化和锥段角度变化对分流比基本上没有影响；随着直径、锥段角度的增大，分离粒度逐渐增大，回收率降低；随着入口压力增大，水力旋流器的分离粒度变小，底流的分流比会缓慢增加；随着溢流管管径的增加，分离粒度增大，分流比明显减小，回收率降低；随着底流管直径的增加，分离粒度减小，分级效果明显下降，回收率会增加。

The following points are emphasized:The operation models of adiabatic and diabatic distillation have been set up and the operation block, thermodynamics model and mathematical model in the simulation have been determined as well;(2)Based on the simulation and exergy analysis with Aspen Plus program, shortcut distillation design—DSTWU model and rigorous distillation design—RADFRAC model, the author has determined the heat duty, exergy losses and the distribution of exergy losses along the adiabatic column, which will help the simulation and optimization of the diabatic distillation;(3)Diabatic distillation under various operation conditions has been simulated by using energy balance method and exergy analysis;(4)How the different mixture and the various degree of separation, number of trays and feed location influence exergy saving in diabatic distillation have also been discussed;(5)On the basis of the total exergy losses along the column, different schema of the heat transfer distribution along the column have been compared and analyzed;they can be classified in three categories: heat duty equipartition approach, empirical approach, separation degree matching approach. In conclusion, different heat transfer distribution along the column will have effect on total exergy losses. In particular, most satisfactory results have been obtained by using separation degree matching approach. In order to diminish the exergy losses, heat transfer distribution should meet the needs of the request of separation degree.And on this premise, the author makes his suggestion in increasing the proportion of heat supplied to the tray with minimum exergy losses and decreasing the proportion of heat supplied to the tray with the maximum exergy losses.

本文对透热精馏过程进行了模拟并对其节能效果的影响因素做了较为全面的分析和深入的研究，主要研究内容如下：(1)建立了常规精馏和透热精馏过程的模拟操作模块、热力学模型以及数学模型；(2)利用化工模拟软件Aspen Plus并分别采用DSTWU简捷模型和RADFRAC严格计算模型对常规精馏进行模拟计算和有效能分析，确定常规精馏塔的公用工程热负荷、有效能损失及有效能损失在塔内的分布，为透热精馏的模拟和优化提供数据参考；(3)对不同物系在不同分离度条件下进行透热精馏的模拟，分别采用能量衡算法和有效能分析法进行计算和分析；(4)探讨了各种因素如物系的选择、不同分离度、塔板数、进料位置对透热精馏节能效果的影响；(5)以全塔总有效能损失为比较基准，对热量在塔内的三种分布方案即热负荷平均分配法、经验法和分离度匹配法进行了对比分析并得出结论：塔内热量的不同分布方案对于全塔总有效能损失会产生影响，其中以分离度匹配法的节能效果最为理想，为减少有效能的损失，应使塔内的热量分布满足各塔板的分离度要求，并在此前提下，尽量减小有效能损失大的塔板的热负荷和增加有效能损失小的塔板的热负荷。

We designed four chips for different functions, fundamental separation fixed quantity chip, parallel separation fixed quantity chip, series separation fixed quantity chip, and combinative separation fixed quantity chip.

由此理论公式吾人设计了四种具不同功能功能性定量流体碟片，包括流体分流定量碟片、平行定量碟片、依序定量碟片、二次样品纯化定量碟片，经实验后其定量功能符合吾人所需功能。

Firstly it plays the fine separation role and maintains the separation selectivity, secondly the role of countercurrent-collision mineralization and separation and prerecovering the material with good floatability (the gangue of column flotation as middlings will undergo further separation and recovering).

它首先要发挥精选作用并确保整个设备的分选选择性；然后才是逆流碰撞矿化与分选，预先回收可浮性好的物料（其尾矿还要进一步分选回收）。

Firstly it plays the fine separation role and maintains the separation selectivity, secondly the role of countercurrent -collision mineralization and separation and pre–recovering the material with good floatability (the gangue of column flotation as middlings will undergo further separation and recovering).

它首先要发挥精选作用并确保整个设备的分选选择性；然后才是逆流碰撞矿化与分选，预先回收可浮性好的物料（其尾矿还要进一步分选回收）。

It respectively constructs quasi projection-separation facet sets of two convex polytopes while their orthogonal projection on the centerline overlap mutually. Afterward it judges the separation of two convex polytopes by confirming non-overlap in orthographic projection on the centerline or by finding out a projection-separation facet from two quasi projection-separation facet sets, otherwise a collision is judged.

该算法通过判断2个凸多面体在中心线上的正投影不相交，或者分别构造它们的准投影分离面集合，并从这2个集合中找到一个投影分离面，来判断2个凸多面体分离；否则，判断为相交。

Objective To study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

目的 观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

On his way to the lift, he looked back to us or was it me his eyes pointing?

当他要进电梯时，他回头看我们（或者说是我，他的眼光？