中分
- 与 中分 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In modern physics research, the calculus of variations has a broad application of law. As a solid mechanics, structural mechanics and computational mechanics of the theoretical foundation, it has important value in theory and practice on the mechanics; Variation method ruled out the perturbation of the restrictions can be widely used in many state-level and the state function in the calculation in the optical; Calculus of variations can be calculated with the parameters, we can guarantee the reliability of the results, can effectively reduce the workload of calculation, It can be said that the applications of calculus of variations are very broad.
在现代的物理学研究中,变分法有着广泛的应用:在力学上,变分法作为固体力学、结构力学及计算力学的理论基础,在理论上和实践上都有重要的价值;在光学上,变分法排除了微扰法的限制,可以广泛应用于诸多定态能级和态函数的计算中;在量子力学的应用中,具有可算出系统的参数,既可以保证计算结果的可靠性,又能有效地减少计算的工作量等的优点,可以说变分法的应用领域十分广阔。
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This makes more and more people pay more attention to studies and applications of numerical simulation in thermal recovery. In this research, we have developed a reliable mathematical model for thermal recovery, which takes a full consideration of the effect of viscos, gravitical and capillary forces on the three-phase flow of gas, water and oil, the effect of the temperature on the medium characteristics of liquid and solid, the phase equilibrium of gas-liquid in each component, heat transportation including connection, conduction and radiation as well as heat losses in both the overburn and underlying strata. In the space discreation of the mathematical model, we have proposed a new method based on the improvement of the conventional nine-points difference approximation, which has a higher difference accurancy.
本项研究以热力采油的主要机理为基础,充分考虑在粘性力、重力和毛管力作用下油水气三相流动,考虑温度对各种流体和固体介质物性的影响,考虑每一组分中汽液两相的相平衡,考虑热在地层中的传导、对流和辐射以及上下盖层的热损失,利用热力学第一定律、质量守恒定律和流体迁移定律,建立了正确可靠的注蒸汽数学模型;在对数学模型进行空间离散时,利用控制有限体积积分法,对以往的九点差分近似作了合理的改进,使其具有较高的差分近似精度:结果表明,该公式的近似精度要比以往文献中所给的九点差分近似精度高,可以认为,在油藏数值模拟中,如果遇到非均质情况,使用这种九点差分近似更合理。
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The results show that the vague point of gasoline and ethanol increase as the increasing water content of ethanol without adding the additives; dispersant can evidently decrease the gasohol's va...
结果表明,无分散剂时,随着乙醇中水的体积分数的增加,乙醇汽油的分层温度逐渐升高;加入主分散剂可以显著降低乙醇汽油的分层温度,而少量助剂B、C可显著改善主分散剂A1的助溶效果;随着分散剂体积分数的增加,乙醇汽油的分层温度逐渐降低;在乙醇体积分数为10%,乙醇中水的体积分数为4.3%,分散剂的体积分数为2.91%,其组成V(A1)∶V∶V为90∶7.5∶2.5时,乙醇汽油的分层温度可达到-25℃。90号汽油的辛烷值调合后提高到93号,且其T10和T50点均较调合前低。
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PEG1000-1500 can be used as groundmass and lubricant in medicine, textile and cosmetic industry; dispersing agent in coating industry to improve the resin property of water dispersion and flexibility.
PEG1000-1500在医药、纺织、化妆品工业中用作基质和润滑剂、柔软剂;涂料工业中作分散剂,改进树脂的水分散性、柔韧性;油墨中可提高染料的溶解能力,降低其挥发性,在蜡纸和印台油墨中尤为适用;也可在圆珠笔油墨中作调节粘度用;橡胶工业中用作分散剂,以促进硫化作用,以及用作碳黑填充料的分散剂。
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According to the existence results of general equilibrium problems and vector equilibrium problems have been studied more and more. Inspired and motivated by these research results, this paper is devoted to study systematically a class of equilibrium problems, which is unify and extension of a large number of known equilibrium problems and variational inequalities problems. The research is carried on from three aspects.Firstly, in finitely continuous topological spaces, we introduce four new types of the system of generalized vector quasi-equilibrium problems, and we derive some existence results of a solution for the system of generalized vector quasi-equilibrium problems via the maximal element theorems in product finitely continuous topological spaces.Secondly, in complete metric spaces, we provide the Ekeland variational principle to equilibrium problems with set-valued maps. And via the Ekeland variational principle, existence results for vector equilibrium problem with set-valued maps and the system of vector equilibrium problem with set-valued maps.
针对一般的均衡问题和向量均衡问题解的存在性,已有许多研究成果,受这些成果的启发,本文主要从理论上较为系统地研究了一类均衡问题,它统一和推广了许多已有的均衡问题和变分不等式问题,研究分有三个方面;首先,在有限连续拓扑空间中,我们提出了四类广义向量拟均衡系,并借助于有限连续拓扑空间中的极大元定理讨论了这四类均衡系问题的解的存在性问题,然后,在完备度量空间中,我们给出了关于集值均衡问题的Ekeland变分原理,并利用Ekeland变分原理分别讨论了集值向量均衡问题和集值向量均衡系问题的解的存在性。
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At the same time, these four great Epistles bear witness to all the most important facts in the life of Christ: His Davidic dscent, His poverty, His Messiahship, His moral teaching, His preaching of the kingdom of God, His calling of the apostles, His miraculous power, His claims to be God, His betrayal, His institution of the Holy Eucharist, His passion, crucifixion, burial, resurrection, His repeated appearances Romans 1:3-4; 5:11; 8:2-3; 8:32; 9:5; 15:8; Galatians 2:17; 3:13; 4:4; 5:21; 1 Corinthians 6:9; 13:4; etc.
在同一时间内,这4个大书信见证所有最重要的事实是在生命的基督:他davidic dscent ,他的贫穷,他messiahship ,他的德育教学中,他宣扬神的国度,他呼唤的使徒他的神奇的力量,他宣称自己是神,他的背叛,他的机构的圣体圣事,他的激情,在十字架上,埋葬,复活,他一再露面(罗1:3-4 ; 5时11分; 8:2-3 ; 8时32分; 9时05分; 15时08分;加拉太2:17 ; 3时13分; 4时04分; 5时21分;哥林多前书6时09分; 13时04分;等)。
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This dissertation involves the study of the growth dynamics of colloidal particles under unequilibrium and irreversibility condition. Firstly, it is of interest to investigate whether the ideal diffusion or reaction-limited aggregation universal behavior can be observed for the initially polydisperse practical system of basic yttrium carbonate as well. The fractal structure of basic yttrium carbonate aggregate cluster was observed using transmission eletron microscopy. The aggregation kinetics of basic yttrium carbonate colloids was studed using dynamic 1ight-scattering techniques. At 1.00mol/l NaCl solution the fast diffusion-limited aggregation behavior was observed with an increase in the aggregate size over time described by a power law. The aggregates are characterized by a fractal dimension D=1.82. The disordered and ramified cluster is consisted of primary colloidal particles and tenuous and more open. These are in good agreement with those observed for other colloidal system such as colloidal gold (1.86), silica (1.85) and polystyrene latex (1.82) in diffusion-limited aggregation from the static and dynamic light scattering by Lin. Therefore ideal diffusion-limited aggregation behavior can be observed in practical polydisperse system as well. Smoluchwski and fractal theories were used to obtain the aggregation rate constant for initially polydisperse system for the first time.
本论文研究胶粒的非平衡不可逆聚集动态学,分为两个部分,第一部分是通过实验研究一个新的初始多分散的碱式碳酸钇胶粒实际体系中,聚集标度性质的普适性,即使用透射电子显微技术观测聚集粒子簇的分形结构,使用动态激光光散射研究碱式碳酸钇胶粒的聚集动力学,胶粒带电而产生静电排斥作用使得碱式碳酸钇胶粒处于稳定状态,当加入电解质NaCl溶液时,碱式碳酸钇胶粒间的Debye-Hückel屏蔽距离缩短,从而降低静电排斥能垒,引起胶粒发生不可逆聚集,加入电解质NaCl的浓度为1.00mol/l时,碱式碳酸钇胶粒进行快速聚集,经历扩散控制聚集机理,形成结构疏松、更为开放的分形聚集粒子簇,其分形维数为1.82,碱式碳酸钇胶粒聚集增长动力学遵循幂函数增长规律,与Lin等使用静态激光光散射和动态激光光散射测量硅胶(1.85)、金胶(1.86)和聚苯乙烯胶乳(1.82)在扩散控制聚集状态形成聚集粒子簇的分形维数值以及粒子簇聚集增长的动力学规律相一致,表明胶粒聚集标度性质的普适性质在初始多分散的实际体系中也是存在的,首次由动态激光光散射的实验数据得到初始多分散胶粒分形粒子簇的聚集速率常数,并且其值与Smoluchowski聚集速率理论预期相符。
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The invention discloses the anti-fake method by using the 3D stereoscopic icon, which can show 3D stereoscopic icons and hide the confidential image information in the 3D stereoscopic icons, comprising the following steps of: obtaining parameters, inputting confidential images and grey images; then using a visual divided storage method to build n visual divided storage images, using a 3D stereograph method to build n 3D stereoscopic images, adjusting the sizes of the n visual divided storage images and the n 3D stereoscopic images and dividing the n visual divided storage images and the n 3D stereoscopic images into a plurality of basic blocks; finally random choosing the basic blocks in the corresponding positions in the visual divided storage images or the 3D stereoscopic images to build n 3D stereoscopic and visual divided storage icons, etc.
为了既能三维立体显示图标,又能在三维显示的图标中隐藏秘密图像信息,本发明公开了利用三维立体图标防伪的方法,包括获取参数,输入秘密图像和灰度图像;然后利用可视分存方法构造n幅可视分存图,利用三维立体画方法构造n幅三维立体图,调整所述n幅可视分存图和所述n幅三维立体图大小并分成多个基本块;最后随机选取可视分存图或三维立体图中相应位置处的基本块,构造n幅三维立体可视分存图标等步骤。
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Fractal is a subdiscipline of nonlinear area, researches on fractal characteristics of the deoxyribonucleic acid sequence may reveal some secret hidden in the DNA sequence during the process of biological evolution. Chaos Game Representation was proposed as a scale-independent representation for genomic sequences by Jeffrey in 1990. This technique, based on iteration function system, represents the word distribution statistics in DNA sequence as the fractal graphic. Therefore, we can get the distribution of sequence through analysis of fractal theory.
分形是非线性领域的一门分支学科,关于脱氧核糖核酸序列分形特征的研究,可以揭示生物在进化过程中隐藏在DNA序列中的某些秘密。1990年Jeffrey提出了基因组序列的与尺度无关的混沌游戏表示法,这是基于迭代函数系统的一种方法,它将DNA序列中一定长度字的分布规律表现为图形的分形特征,进而通过分形分析就可获取序列的分布规律,从而也成为DNA序列分析的一种统计方法。
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Results: Cultures for Mycobacterium were positive in a total of 2657 people, among them 1848 strains (69.55%) were Mycobacterium tuberculosis, and 809 strains (30.45%) were Nontuberculous Mycobacterium. Among the 1848 strains of Mycobacterium tuberculosis, 337 strains (18.24%) were drug resistant, and 75 strains (4.06%) of them were resistant to both Isoniazid and Rifampin which made them multi-drug resistant. Among the 548 strains of Nontuberculous Mycobacterium, 453 strains (82.66%) were drug resistant. There were a total of 261 rapidly growing mycobacteria, and 242 (92.72%) of them were drug resistant.
结果:分枝杆菌培养阳性共2657菌株/人,其中1848株(69.55%)为结核分枝杆菌,809株(30.45%)为非典型结核分枝杆菌感染。1848株结核分枝杆菌中,337株(18.24%)有抗药性问题,其中75株(4.06%)同时对Isoniazid和Rifampin有抗药性为多重性抗药菌。548株非典型结核分枝杆菌中453株(82.66%)有抗药性问题;快速生长菌群共261株,其中242株(92.72%)有抗药性问题。
- 推荐网络例句
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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.
曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。
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The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.
稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。
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When I was in school, the rabbi explained everythingin the Bible two different ways.
当我上学的时候,老师解释《圣经》用两种不同的方法。