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- 与 fraction 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Linear solvation energy relation was firstly introduced in the paper, and the method and step of gaining the special parameters of solvent and solute were introduced in detail, and these special parameters were used to selection and optimization of extractive agent in extractive distillation. The model of predicting activity coefficient at infinite dilution was established by linear solvation energy relation. By the above theory, several candidate solvents were selected to separate C5 fraction, and by experiment of vapor-liquid phase equilibrium at atmosphere pressure, the mixture of N-methyl-pyrrolidone including 4% water was used extractive agent of separating C5 fraction. Then binary vapor-liquid phase equilibrium of the some compound in C5 fraction and N-methyl-pyrolidone were determined at atmosphere pressure and correlated by NRTL equation. Isoprene being objective compound, experiments were operated in the laboratory-scale column; the processes were simulated by RadFrac model in ASPEN PLUS. And by the combination of experiment and simulation, the new process of separation of C5 was established.
本文首先对线性溶剂化能关系进行了分析介绍,也介绍了采用溶剂化能关系得到溶质溶剂特性参数的方法步骤,并将这些参数用于萃取精馏萃取剂的选择与优化;也通过线性溶剂化能关系式建立无限稀释活度系数预测模型,取得了一定的预测精度;将通过上述方法初选的溶剂进行了常压汽液平衡的测定研究,通过实验研究选定含水4%的N-甲基吡咯烷酮溶液做为C5分离的萃取剂,测定了大量N-甲基吡咯烷酮与C5组分的二元平衡数据,并进行关联计算;以异戊二烯为目标产物在实验室规模的精馏塔内进行了C5分离的实验研究,取得大量塔内数据;通过选用合适的热力学模型,采用ASPEN中RadFrac模块对分离过程进行模拟研究,通过实验与模拟相结合,建立了C5分离的新工艺,为将来的工业化打下了坚实的基础。
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Thiele type continued fraction interpolation is used to interpolate pixels around damaged part of the regular texture aiming at repairing the texture based on the regular inpainting method. Bisection is used when whole information and details are needed in sampling. Thiele type continued fraction interpolation is not an ideal method in the case of irregular damaged region Newton-Thiele type contined fraction is put forword to solve this problem. Point window is also used in the process of sampling.
在通常的图像修复技术上,对于一些规则的破损纹理图案采用一元Thiele型连分式模型来进行修复,在采样选取上,考虑到图像的整体信息和细节特征采用了二分的方法来进行处理,对于具有不规则破损区域的纹理图案,采用一元的方法不能达到令人满意的效果,采用二元Newton-Thiele型混合有理插值连分式的有理插值的方法来对具有不规则破损部分周围的像素点进行插值并采用采样点窗的方法进行采样可以达到修补破损部分的目的。
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Hydrocarbon structural-group components in the hydrotreating of residual oils The residual oils were preseparated into 4 fractions by alumina/silica serial column A method for measuring the hydrocarbon structural-group components in saturated fraction, aromatic fraction, and resin fraction of residual oils was established using low resolution, high ionization voltage mass spectroscopy.
渣油加氢处理过程烃类结构族组成变化研究采用氧化铝/硅胶串联柱对渣油样品进行四组分预分离,建立了低分辨、高离子化电压质谱测定渣油饱和烃、芳烃和胶质组分烃类结构族组成的方法。
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The calculative results show that the efficient thermal conductivity rises as temperature rises under a constant fiber volume fraction, and it is proportional to the third power of absolute temperature; it decreases as fiber volume fraction increases under high temperature; it increases as fiber volume fraction increases under low temperature, and it is in agreement with that is described in the literature.
此式计算结果表明:在纤维体积分率一定时,其有效导热系数随温度的升高而升高,且它是绝对温度的三次方关系;在高温条件下,其有效导热系数随纤维体积分率的升高而四川大学硕土学位论文有减少趋势;在低温条件下,其有效导热系数随纤维体积分率的增大而增大,与所查文献描述规律一致。
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The results show that the turbulence intensity, fouling cleaning intensity and pressure drop increase with the increase of flow velocity, particle size and the volume fraction. The effect of liquid-solid fluidzed-bed cleaning fouling depends on the reasonable combination of flow velocity, particle size and the volume fraction. Through an integral consideration of water saving and energy saving and uniformity of fouling cleaning, the optimum flow velocity of flow, particle size and volume fraction are 2.0 m/s~2.5 m/s, 3 mm~4 mm and of 5%~8 vol%, respectively.
结果表明:流体的湍流强度、壁面污垢清洗强度和压力降均随流速、颗粒粒径和体积分数的增加而增加;液固流态化清洗防垢除垢效果取决于流速、液固颗粒粒径和体积分数的合理组合;综合考虑节水节能及污垢清洗的均匀性,高炉冷却壁的最佳流速为2.0~2.5 m/s,固相颗粒粒径为3~4 mm,体积分数为5%~8%。
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In the slow sorption stage, variations in sorption ratio in humic acid fraction was very small, and the influence of original concentration of phenanthrene was slight ; while for humin fraction, the sorption ratio of phenanthrene at lower initial concentration was significantly higher than at higher one, in addition, the sorption ratio showed a gradually increasing trend, indicated humin fraction as the main domain in charge of the slow sorption.
在慢吸附阶段,胡敏酸中菲的吸附比例变化很小,菲初始浓度的影响也不大;而对于胡敏素组份,低初始浓度条件下菲的吸附比例明显大于高初始浓度条件,并呈现逐步增加的趋势,表明胡敏素组份是慢吸附的主要发生域。
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Results: In the experimental group, both TBV%(the fraction of trabecular bone volume) and MTT of the condylar subchondral bone were significantly decreased, whereas the RS%(the fraction of resorptive surface) and OS%(the fraction of osteoid surface) significantly increased.
结果:实验组大鼠髁突软骨下骨小梁相对体积减小,平均宽度变薄,而骨小梁吸收表面百分比与类骨质表面百分比比对照组均增加。
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The low-temperature resistivity of filling skutterudite increases with the increase of temperature. However the slope of the resistivitytemperature curves are different. The curve of the sample with low filling fraction is smooth, and that of the samples with high filling fraction is sharp. It is caused by the existence of the impurities in the samples with low filling fraction.
填充型方钴矿材料的低温电阻率随镧填充率的变化规律与室温相同,但不同填充率的方钴矿材料的电阻率随温度变化的曲线的斜率不同,低填充率样品随温度变化趋势明显地比高填充率样品平缓,这种现象主要是由存在于低填充率样品中的杂质相引起的。
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The SPC-2S fraction with 30% EtOH were constituted epicatechin and epicatechin gallate ester ;The SPC-2S fraction with 50% EtOH contained epicatechin and dimeric procyanidins, another SPC-3S contained epicatechin ,dimeric procyanidins and trimeric procyanidns ;Dimeric procyanidins and trimeric procyanidns constitute SPC-5S fraction;monomer dimer trimer tetramer pentamer of procyanidins were the major fractions in 70% acetone elute solution.
1和 2.01:1,也以添加0.1%SPC酒样中两者的比例最为协调;对小曲酒中酸的影响表现为,添加SPC后有利于降低酒样中乙酸的含量,各酒样中乙酸的量随着SPC添加量高粱外种皮中原花青素及其对小曲白酒挥发性成分影响机制研究的增加而降低;对醛类的影响为,添加SPC可降低酒样中糠醛的含量,其中以添加 0.1%SPC酒样中含量最低,为对照组的39.3%,而4个酒样中乙醛含量则无明显差别;低SPC添加量有降低酒样中杂醇油含量的趋势。
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The results show that:(1) The penetration resistance of functionally graded layered armour made of metal Matrix Composites is better than that of the Aluminum plate;(2) The penetration resistance of the functionally graded layered armour whichlay_up is 0%/57%/0%/26%/0%/12%/0% is the best;(3) The resistance penetration of the the functionally graded layered armour can be greately promoted through optimizing the lay_up and volume fraction of the reinforced particle;(4) The functionally graded armour in which the particles distribute continuous has better behavior of resistance penetration when the volume fraction of the reinforcements are constant;(5) The higher volume fraction of the reinforcements at the surface of FGM and the more non-homogeneous the reinforcements distribution, the higher thesurface Youngs Modulus and the flow stress are;(6) The behavior of penetration resistance of the functionally graded armour in which the particles distribute continuously is better than that of homogeneous steel plate;(7) The functionally graded armour provedes a important approach for the optimization and design of the resistance penetration;(8) The numerical results of simulation of the bird striking the aircraft structureshow that the finite element model of the balance leg is effective;(9) The numerical results show that the structure internal force is relative largewhen the bird strikes the top of the balance leg;(10) The process of the birdstrike is thaf.after the bird penetrting through the front skin of the balance leg and striking the front beam,the bird is broken up in three parts.
经过本文所进行的数值模拟后我们发现:(1)在层状梯度装甲板的抗侵彻过程中层状功能梯度板比铝板的抗侵彻性能好;(2)在层状梯度装甲板的抗侵彻过程中铺层顺序为0%/57%/0%/26%/0%/12%/0%的功能梯度装甲板的抗侵彻性能最好;(3)通过优化组合层状梯度板的铺层顺序以及增强颗粒的含量可以大大改善梯度板的抗侵彻性能;(4)当SiC颗粒体积含量一定时,增强颗粒连续分布的功能梯度板表现出了优越的抗侵彻性能;(5)增强颗粒连续分布的功能梯度板表面SiC颗粒体积含量越高,分布越不均匀,表面的弹性模量就越高,屈服应力就越高;畜此工业大学硕士研究生学位论丈(6)增强颗粒连续分布的功能梯度装甲板比匀质钢板表现出良好的抗侵彻性能;(7)功能梯度装甲板为整个抗侵彻性的优化设计提供了重要的途径。
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- 推荐网络例句
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The system can be widely used in belt weighing and batching process control,etc.
介绍了基于智能模糊控制的嵌入式配料系统的设计方法,对模糊PID控制过程和系统调零作了重点的讨论,同时给出了PID控制的程序流程图和系统定长调零子程序。
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"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."
"我不知道,"她回答说,"如果你能带我转转,我能认出来的,因为灯塔就在舷窗外。"
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That experience was of great benefit to me.
那次经历对我很有益处。