分析试验
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The image showed that the ratio of raw material of RPC and particle distribution accorded with maximum packing density theory, and the porosity of accumulation was the least. The DSC showed the reaction rate of RPC was very fast and main hydration process focused in shorter time; SEM and X-ray showed that structure of the harden body of RPC was much denser, which mainly composed of some abnormal flat grains that got maximum packing density, and hydration products were mostly composed of Ⅲ type C-SH gel and a small amount of Ca2 and no AFt crystal.
由图象分析可知,即C原材料的比例及颗粒度符合密实堆积原理,堆积物的孔隙率达到最小;差示扫描量热分析表明,RPC的水化反应速度很快,主要的水化过程集中在较短时间内;扫描电镜及X衍射试验表明,RPC硬化体的结构非常致密,主要由一些不规则状的扁平粒子紧密堆积在一起,水化产物主要是Ⅲ型C-S-H, Ca2晶体的量稀少且没有钙矶石。
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Numerical simulation proves that the proposed method is more accurate than conventional harmonic analysis method.
数值模拟试验表明,在适当选取点质量埋深度的情况下,本文的点质量调和分析方法较传统的调和分析方法精度更高。
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Therefore, it is more important to improve TW with an eye to the increasing of starch contents on account of the less constraint effect of lysine to starch contents.1.2 Sources of variations of test weight in maizeClustering analysis was used in 2004. Twenty-nine summer maize hybrids released for commercial production in Shandong province were divided into three types: high-test weight, medium-test weight type and low-test weight type.
通径分析结果表明总淀粉含量对容重的决策系数最大为68.52%,故要提高容重,应该首先着眼于籽粒总淀粉含量的提高。1.2籽粒容重差异的主要来源2004年试验通过聚类分析将山东省最新审定的29个玉米品种划分为三类,高容重型、中容重型和低容重型。
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For improving mixing quality and efficiency,authors gave out definition of mixer rotation speed and its rationality criterion.With the help of theoretical analysis and experimental research,authors discussed the relations among mixer rotation speed with concrete homogeneousness,type of mixer,mixing power and mixing materials and revealed the rational range of mixing speed during mixer designing and using.
为了提高搅拌质量和效率,给出了搅拌机转速的定义和评判搅拌机转速合理与否的准则;采用理论分析和试验研究相结合的方法,分析了搅拌机转速与混凝土均匀度、搅拌装置类型、能耗和被搅拌材料的关系,给出了搅拌机设计和使用时合理转速的范围。
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Finally, it analyses the time complexity of the algorithm and researches how it is influenced by culture operator.3、The paper presents the evaluation standard of the GA's application capability. Basing on characters such as continuity, multi-peak, vibration, randomicity as well as large-scale, five functions are selected to test search ability and robustcity of co-evolution algorithm. Finally, it analyses the simulation result and researches the influence of algorithm brought by culture operators.4、Basing on the concept of collection overcast, it researches the task distribution issue and constitutes delaminated math model on task distribution issue. It puts out the co-evolution algorithm of subtask's decomposing. The experiment compare IGA、SGA to CN and validates the efficiency of co-evolution algorithm on the NP completeness issue.5、Being aim at the optimization issue of load of antenna near ground, it combines many GA strategies and puts forward strategic meme. And it puts out co-evolution algorithm of load of antenna design. And it emulates the optimization design of load of antenna near ground. Finally, it valuates the co-evolution algorithm's efficiency on the continuum search issues of multi-variable and multi-peak value.6、Being aiming at the knowledge of image model matching, it adopts single meme and real code. It puts out fast co-evolution matching algorithm strategy. Basing on NPROD resemble measurement, I emulate the indiscrimination model matching and discrimination model matching. Finally, it valuates the co-evolution algorithm's efficiency on the real code and real time search issue.
分析了算法的时间复杂度,研究了文化算子对算法时间复杂度的影响。3、提出了GA的应用性能评价标准,从连续性、多峰性、随机性、振荡性、广域性多个角度出发选择五个测试函数,对共同进化算法的搜索性能和鲁棒性作了函数优化的性能测试,分析了仿真结果,研究了文化算子对算法的影响。4、基于集覆盖的概念,研究了MAS中的任务分配问题,建立了任务分配问题的分层数学模型,给出了子任务分解共同进化算法,实验比较了IGA、SGA、CN,验证了共同进化算法对NP完全问题的有效性。5、针对近地天线加载优化设计问题,结合多种改进GA策略,提出了策略型拟子,给出天线加载设计的共同进化算法,对有耗半空间对称偶极子天线加载优化设计作了仿真实验,验证了共同进化算法对多变量多峰连续搜索问题上的有效性。6、针对图像模板匹配问题的领域知识,采用单类拟子和实数编码,给出快速共同进化匹配算法策略,基于NPROD相似度测度,仿真试验了无差别和有差别模板匹配,验证了共同进化算法对实数编码和实时性搜索问题上的有效性。
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From the angle of engineering application, this article analysed the corrosion characteristics and damage causes of the current structural used concrete in the region of Hangzhou gulf, on the basis of on-site survey of all the Marine concrete projects in that area. Taking HPC used in Marine as research objective, this article put great emphasis on the influence of the composition cementing material system to concrete performance, and make a preliminary probe into the action mechanism of the composite effects of various mineral materials in improving the performance of concrete by laser measuring size machine and EMPA. Through experiments, the article discussed how chloride ingression in concrete will be effected by such factors as exposure time, chloride binding, environment temperature, stress and cracks conditions; and also analysed the symptoms of these factors in the model of concrete service life prediction by conference to all related research reports both home and aboard. On the foundation of abovementioned research, this paper brought up an engineering model of service life prediction of marine concrete, which is based on chloride-induced corrosion.
本文从工程应用的角度,在对杭州湾地区既有海工混凝土工程作实地调研的基础上,研究分析杭州湾地区既有海工混凝土结构的腐蚀特点和破坏原因;以海工高性能混凝土为研究对象,着重研究复合胶凝材料体系对混凝土性能的影响,并应用激光粒度仪、EMPA等分析手段,就复合胶凝材料的作用机理进行初步探讨;试验研究混凝土暴露时间、胶凝材料对氯离子的吸附、环境温度、应力和裂缝状态等因素对混凝土中氯离子迁移运动的影响,并结合国内外相关研究报导,探讨这些因素在混凝土使用寿命预测模型中的表征;在上述研究基础上,提出以氯离子侵蚀为基础的海工混凝土使用寿命预测的工程应用模型。
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Based on some correlative the theory analysis and conclusion of experiment about impedance muffler, some issues about the foundation of model of leak pipeline are tried instructively and analysis reasonably by the acoustical analysis and the characteristic of acoustical spread in the leak pipeline is studied. The leak detection is a little more wonderful technology which can find the leak and then locate it accurately in virtue of correlation leak detection.
本文综合了有关文献的理论分析和试验结果,从声学的角度对供水管道漏损的声学模型的建立进行了有益的尝试和合理的分析,并对漏损管道内的流体声传播特性进行了研究。
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It proposed the method of adjustment and optimization of the peripheral truss net surface integrating distance weighted factor and the genetic algorithm based on-orbit thermal environment for the first time, Optimization adjustment simulation of the net surface has been carried based on-orbit thermal environment for the large deployable antenna.The research of thermal analysis technology in this article would provide more scientific foundation for thermal design of antenna on satellite, it would greatly improved thermal design level for satellite antenna of our country, the thermal optimize design which were based on those would effective reduce the costs of test.
本文所完成的热分析技术的研究能够为星载天线的热设计提供更科学的依据,可大大提高我国星载天线热分析的水平,以此为基础的热优化设计可以有效的减少试验费用。
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Combining the experimental results and theoretical analysis, the following work has been accomplished.(1) Reasons of the decrease of interelectrode capacitance and the increase of discharge gap caused by the powder suspended in dielectric fluid are explained. And the mechanism that surface quality of workpiece improved by powder-mixed EDM is analyzed from this viewpoint.(2) The variation regularity of the percentage of silicon on the machined surface of workpiece has been summarized according to the experiment results when silicon powder was added into the working fluid. The entropy is introduced to explain the reasons for this variation regularity by thermodynamics.(3) The dimensional accuracy is greatly influenced by the overcut resulting from discharge gap and electrode wear in practice application. Empirical formulas for the overcut in EDM and powder-mixed EDM are established based on the experimental results using the ternary linear regressive method in this paper.(4) The influence of main factors on the machined surface characteristics has been evaluated based on the orthogonal experimental design method.
通过一系列普通电火花加工与混粉电火花加工的对比实验,运用工艺实验和理论分析相结合的方法,重点做了以下工作:(1)探讨了粉末颗粒导致极间电容减小、放电间隙增大的原因,并从这个角度解释了混粉电火花加工可以改善工件表面质量的机理;(2)以混合硅粉的电火花加工为例,实验得出峰值电流和脉冲宽度对加工表面层成分中硅元素含量的影响规律,并引入熵的概念从热力学的角度对硅元素含量变化的原因寻找了理论依据;(3)在实际加工中,由于粉末的加入使放电间隙变大,这使得混粉电火花加工的尺寸精度难以控制,本文利用三元线性回归的方法,在实验数据的基础上,建立了两种电火花加工过切量的计算公式;(4)将正交试验法应用于混粉电火花加工实验研究,并通过对实验指标极差的直观分析,得出各电参数对加工指标影响的敏感程度。
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Adopting the method of dynamic layout, it researches the irrigational rule'soptimization method of many stages under the condition of lacking water resource.
对于作物水分生产函数的研究采用了Jensen模型,结合试验数据分析水分亏缺对作物产量的影响,采用多元回归分析法求解模型参数。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。