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Therefore, non-contact temperature measurement technique becomes the development trend of high temperature measurement and will be used more and more widely in measuring the temperature field of weld arc and pool.
非接触测温主要有辐射法和干涉法,由于测温元件不与被测物接触,不会破坏被测物的温度场,通过与数字图象处理技术相结合,能实现温度场的快速、实时测量,全面、形象的反映温度场的动态变化,因此成为高温测量技术的发展趋势,在焊接熔池和电弧温度场测量中得到越来越多的应用。
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According to practical work condition, section of a three segment hoist boom is self-determined with SECWRITE commands, then a finite element model is directly established in ANSYS environment with ANSYS finite element analysis software. Using Beam44 beam unit and node degree of freedom coupling technique to simulate connecting between each boom section and conduct finite element analysis, calculated result of stress deformation for the boom is obtained. The result from digital simulation is in relative coincidence with theoretical analytic result and the nonlinear decline occurrence in boom bending moment curve is explained.
以ANSYS有限元分析软件为工具,按吊臂实际工况,运用SECWRITE命令自定义三节吊臂截面直接在ANSYS环境下创建有限元模型,使用Beam44梁单元和节点自由度耦合技术模拟各节臂的连接,进行有限元分析,得到吊臂应力变形数值计算结果,数值模拟所得结果与理论解析解相吻合,解释吊臂弯矩图出现非线性下降的原因。
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The major works are as follows: 1 The 3-D numerical model of U-sharp flow passages is set up. The single-phase fluid flow and heat transfer are simulated for the U-sharp smooth and rib-roughened flow passages with FLUENT software. Their performance curves, temperature field and velocity vector are obtained and the local heat transfer and flow pressure-drop distribution along flow passage are analyzed. It is revealed that the ribbed flow passages can enhance heat-transfer and make the temperature more uniform, but it increases the pressure-drop to more extent. 2 The influences of diaphragm depth, channel width and board spacing on the performance are investigated.
建立了层叠式蒸发器U形流道的3维湍流模型,用FLUENT软件对尺寸相同的U形光滑流道和肋化流道中单相流体的传热和流动进行了数值模拟,得到了两种流道的传热和阻力性能关系曲线及速度矢量图、温度场,分析了光滑流道和肋化流道的局部换热系数及沿程压降变化,结果表明流道的肋化能有效的增强传热,而且使流体的流动和传热更加均匀,但也较大地增大了阻力。
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This paper aims at the time performance of the entire system and uses the task flow graph as the system model.Based on it,an evaluation function based on the priority is achieved,then a new algorithm combining the search space smoothing technology with discrete particle swarm is proposed and whose parameters can be adjusted automatically.At last,the combination problem is addressed.
以提高系统时间性能为目标,利用任务流图构造系统模型,在其上实现了基于优先权的评价函数,提出了搜索空间平滑技术与离散粒子群算法相结合的软硬件划分算法,并且解决了两者的融合问题,并能根据系统信息动态适应调整算法参数。
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On the basis of analyzing the concept frameworks of the three kinds of impacts, a combined method of catastrophe and synergistic for cumulative PEIA and "Radar figure and Don Jones index"method for assessment of sustainability related environmental impact associated with policy are raised, and fuzzy altering weight integrated method for impact assessment on biodiversity is set up by combining fuzzy control altering weight.
在分析和说明它们各自概念特征的基础上,提出了政策累积环境影响突变论和协同学相结合的评价方法构想和与可持续性相关的政策环境影响的&雷达图-道琼斯指数&评价方法,并把模糊控制变权思想结合进生物多样性影响模糊综合评价方法之中,创立了政策对生物多样性影响的模糊变权综合评价方法。
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The new cross bond was formed between SBR and BR by analyzing FT-IR spectrogram, and the interface compatibility was proved by polarizing microscope picture. The mechanical properties of vulcanizate were improved significantly.
通过对空白试样及共混物试样进行FT-IR谱图分析和偏光显微镜照片分析,前者证明了SBR和BR之间产生了新的交联键,而后者证明了相界面的相容性提高了,胶料的机械性能和热老化性能得到显著提高。
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The analysis of lamprophyrespetrology chemistry reveals that it is a series of high potassium- potassium dike rock,it is abandunt in alkali(K2O,Na2O)and has a large reducing capacity.The diagrams of the major-element variation shows that the geochemical compositions-variations of the major oxides have vague general rules of homologous magmatic fractional-crystallization.the pearce diagram of trace elements shows it intensively enriched in LILE,intensively depleted in coherence elements(such as CrNi.et al).
煌斑岩的岩石化学分析表明,乳山地区与金矿成矿相伴生的煌斑岩为高钾质-钾质的碱性脉岩系,富碱(K_2O、Na_2O),具较强的还原能力(FeO含量均远高于Fe_2O_3含量),在哈克图解上,主要氧化物的变异规律表现出岩浆分离结晶演化的特点;微量元素的Pearce图呈现强烈的富集LILE,强烈亏损过渡族元素,稀土元素呈向右倾斜的轻稀土富集配分模式,在有关源区性质判别的图解(Cr-Ce/Sr图解和Ce/Yb-Ta/Yb比值图解)上均显示富集地幔源区的性质。
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The results indicate that the 3D-QSAR model is significant and has good predictability, providing useful information for designing new good activity AHAS inhibitors prior to their synthesis.
根据CoMSIA模型的立体场、静电场、氢键给体场三维等值线图不仅直观地解释了结构与活性的关系,并且与用FlexX预测的结合模式相一致,证明了我们预测的结合模式是可靠的,为进一步设计高活性的标题化合物提供较好的理论指导。
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So, this thesis studied the intermediary banking business based on the background of the development of ICBC. Through using plenty of investigation combining much detailed data adopting the qualitative analysis and the quantitative analysis.using some knowledge of manage, we analyzed the general environment and by using Bauds five power model we thoroughly analyzed and forecasted the industry environment that influence the intermediary banking business development. Last we evaluated the external environment by using the exterior factor evaluation matrix; in the same way we evaluated the internal environment by using he interior factor evaluation matrix and BCG matrix drawing.
因此,本文以中国工商银行中间业务发展为背景,在充分调查研究的基础上,结合大量详实的数据,采用定性分析与定量分析相结合的方式,结合管理学的相关理论,分析了中间业务发展所面临的一般环境,运用波特的五种力量模型对工商银行中间业务发展所面临的行业环境进行了详细的分析和预测,并运用外部因素评价矩阵对外部环境进行了评价;同样地,运用BCG矩阵图和内部因素评价矩阵对内部环境因素进行了评价。
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In order to develop a new path for gene mapping of fish, the digoxigenin and tritium labeled in situ hybridization techniques combined with multiple banding analysis on the pachytene bivalents of M. albus were studied using the wheat ribosomal RNA genes, pig growth hormone gene and MaSoxl (M. albus SRY boxl) DNA segment as the probes. Moreover, the techniques of random primed in situ DNA synthesis were also developed on the bivalents of M.
以两种异源基因和Ma Soxl为探针,采用地高辛或氟标记的原位杂交技术,结合点渍法和DNA印渍法分析,率先在黄鳝减数分裂二价体上开展基因定位研究,并与多重带带型分析相结合,以期为构建黄鳝染色体框架图奠定初步基础,为迅速改变鱼类基因定位研究的落后局面而开辟新的途径。
- 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。