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Abstract: In this article an optimization method is applied to de sign open-type distribution networks.Graph theory technology is used.Its mathem at ical model considers both the investment of constructing lines and the cost of o peration.The main idea is
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文摘:将图论优化技术应用于配电网络的优化设计，提出了一种适合于开式配电网络规划的优化方法.所建的数学模型综合考虑了待建线路的投资和运行费用.求解方法是以图论中的最短路径问题为基础，配合以开式网络潮流算法，并通过可行路径的合理变换，得出满足技术约束条件且使年计算费用取极小值的树状网络结构. |
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Abstract: In this article, a relativistic effect in gold chemistry and the nontrivial physico-chemical properties of gold presented as a consequence this effect were introduced in brief.
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摘要：简要介绍了金化学中的相对论的效应和由此而导致的金的异常物理化学特性。 |
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Abstract: In this article, starting from solute′s transport a nd diffusion equati on, aiming at the saturation state of liquid in homogeneous soil of impermeable stratum and on the condition that lots of saturated solute (e.g. nutriment) on t op of the so
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文摘:从溶质输移扩散方程出发，针对强透水层上均质土壤的液体饱和状态，在顶层含有大量饱和溶质(如养分等)维持着渗透扩散的条件下，进行严密的数学推证，给出均质土壤中溶质浓度分布的解析解。 |
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Abstract: In this article, we described the system design object, the plan of function module, scene organization and fast rendering algorithm in detail.
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文摘:本文对系统的总体设计目标、功能模块的划分、场景的组织、快速显示算法等作了详细的介绍。 |
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Abstract: In this article,a new conception,acidification-index,wasintroduced to distinguish the anaerobic reaction phase,It is testified practicable in an actual project.
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文摘:本文提出了酸化指数的概念，以此作为判别厌氧反应相分离状态的指标。并通过应用实例对其有效性进行了验证。 |
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Abstract: In this article,some problems existing in the design of apheroidal tank were briefly stated,including the advantages and disadvantages of use of quenched and tempered high strength steel as the material of spheroidal tank shell,thedividing type
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文摘:本文简述了调质高强度钢用于球罐壳体材料的优缺点和球罐设计中有关球壳的分割方式，焊接制造加工工艺，焊接裂纹的防止等问题，并提出了相应的建议。 |
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Abstract: In this article,the optimization of surface crack detection of speed reducer gear was made using fuzzy set theory,the result show that the rotation magnetic field is the best way of surface crack detection and lots of extending surface fatigue c
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文摘:采用模糊集的贴近度计算对齿轮表面探伤方法进行了优化选择，表明旋转磁场探伤是齿轮表面探伤的最佳方法，在实用中检测出大量的正在延伸扩展的表面疲劳裂纹。 |
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Abstract: In this article,the problems about the studens' characteristics and the cultivated aim etc.are analysed and the relevant counter-measures are raised in the teaching and studying reform of oral techniques in the higher 5-year professional school.
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文摘:分析了五年制高职口腔技术专业教学改革中有关学生特点、培养目标等几个问题，并就这些问题提出了相应的对策。 |
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Abstract: In this article,we discuss the calculation method of the heat analysis in the multilayer rectangular model system when there is heat source in the upper surface of the system.This method can be used in the heat analysis of the design of integrat
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文摘:研究上表面含热源的多层矩形模型半解析的热分析计算方法.该计算方法可以用于集成电路、混合电路和微电子组装件的热设计工作. |
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Abstract: In this article，the vibration of a three-cylinder engine equipped on cars is discussed.After the theoretical analysis and practical measurements，we improved the balance characteristics according to rule of over-balancing.Meanwhile，the position o
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文摘:本文以一实际的三缸车用发动机为例，经计算分析与实测，采用过量平衡法改善其平衡特性以及对该机的支承位置和减振器刚度进行调整后，使该机组振动烈度大大降低，达到了预期效果。 |
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Abstract: In this paper , a high-precision DC stabilized voltage source made up of common electronic device is developed .
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文摘:本文介绍了一种以常用电子元器件构成的高精度数控直流稳压电源。 |
