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Influence of high aspect ratio convergent nozzle with different transition cross-section and nozzle shape on jets mixing characteristics

圆转矩形大宽高比收敛喷管过渡型面及喷口形式对射流掺混特性的影响

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The entry convergent flow pattern was observed with flow visualization technique when the resin melt flowed through a die featuring abrupt contraction in cross-section of channel and axial symmetry.

应用毛细管流变仪测量了在接近实际挤出工艺条件下低密度聚乙烯熔体的流变性质;应用流动可视化技术,观测了试样熔体流经突然收缩的轴对称口模时的入口收敛流型。

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The MHD equilibrium solutions of a toroidal plasma with non-circular cross-section and linear current distribution are written in terms of a fast convergent series.

用一个收敛很快的级数构造了非圆截面、线性电流分布环形等离子体的磁流体平衡解。

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A circular arch with constant thickness in the horizontal section is defined and its crown contilever has an arbitrary convex curve on upstream face. Such as.

研究对象是水平截面为等厚园拱、拱冠上游面呈任意凸曲线的双曲拱坝。

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Optimizing Profile cross Section of Lined Water Conveyance canal

衬砌配水渠道最优纵横断面优化设计

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A nonlinear programming model for optimizing profile cross section of lined water conveyance canal is presented in this paper.

采用非线性模型,推荐田间混凝土衬砌渠道纵横断面的优化设计方法,且可节省大量投资。

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Among some improvement, outside fresh air sends directly to those spots around cooking range and chef breathing section where pollutant concentration is beyond standard can meet oxygen requirement for gas combustion efficiently and dilute pollutant concentration there quickly;

以组合风幕送风方式将室外新风直接送到炉灶周围和厨师呼吸区污染物浓度超标部位,高效率地满足煤气燃烧需氧量要求、快速稀释超标部位污染物浓度;

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The internal coolant channel in an actual turbine blade was simplified into a variable cross-section channel with ribs and bleeding holes.

以航空发动机涡轮叶片中段内部冷却通道为研究对象,将其简化为带肋变截面U型通道。

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Results There was difference in the incidence of fetal distress ( P < 0.05). The incidence of emergency section in cord binding neck was significantly higher. But there was no difference in the incidence of neonatal asphyxia between the two groups.

结果观察组胎儿宫内窘迫率明显高于对照组(P<0.05),且急诊剖宫产率明显升高(P<0.01),但两组新生儿重度窒息发生率差异无显著性(P>0.05)。

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Application value of three-dimensional coronal section imaging in the diagnosis of uterine malformation combined with early pregnancy

三维冠状切面在诊断子宫畸形合并早期妊娠的应用价值

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Result Model group showed neurological behavioral disorders following model establishment. TTC staining showed infarction in coronal section of brain.

结果模型组造模清醒后出现神经行为学改变,TTC染色脑冠状切面出现明显的梗死灶,HE染色及透射电镜可见神经元细胞呈不同程度的缺血性改变。

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Objective: To investigate the division and distribution of pulmonary segments on the coronal section.

目的:研究肺段在冠状断面上的划分及分布。

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Combined with the traditional textile technique theory, characteristic parameters ′ calculation formulae of end-section were deduced under the retracing cosine curve model.

最后基于对余弦折回曲线的分析,利用数值模拟证实余弦折回曲线在干纱缠绕圆柱壳体预成型中有利于高速加工;

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Risk Analysis of Design Flood Stage of Nanjing Section of Yangtze River Flood Protecting Embankment

长江防洪堤南京段设计洪水位风险分析

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In this thesis, the calculation method of the elastic force and strength of varied section open-ring has been proVided, If this kind seating ring of supporting ring is used in cylinder case, the uniform elastie force ex-erted on cylinder wall by the ring is produced.

本文主要论证了变截面开口圆环的弹力集度及强度校核计算方法,缸套内采用这种密封环或支承环,可使圆环对缸壁沿圆周产生均匀的弹力。

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The Application of Improved Ranging Pole Method in Cross-section Surveying on Highway

改进的抬杆法在公路横断面测量中的应用

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Miss Sun asked the Foreign Languages Department Chairman Liu for permission to have the Section Four students practice writing sentences instead of compositions.

孙小姐征求了外国语文系刘主任的同意,不叫丁组的学生作文,只叫他们练习造句。

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