• 翼片间隙导致减小

    The space of wings results in decrease of circulation around each wing.

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  • 本文主要研究出口环量出水管道水力特性影响

    The influence of outlet circulation of mixed-flow pump on the hydraulic performance of the outlet pipe was studied in this dissertation.

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  • 控制环量方法离心叶轮设计中的应用展开了研究。

    This paper focuses on the application of method of controlled circulation in the quasi three dimensional design process of centrifugal impeller.

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  • 用速度梯度压力梯度环量梯度模拟大攻角尖前缘三角

    Velocity gradient, pressure gradient and circulation gradient are used to model the separated vortex flow field over a leading edge delta wing.

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  • 给出了机翼—挂架组合体速度环量分布外挂表面压强分布

    The speed fields and circulation distribution of wing-pylon combination, and the surface pressure distributions of the stores are given.

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  • 然后环量收敛尾迹收敛条件下计算拉力满足拉力收敛准则

    Then on the condition of circulation and wake geometry convergence, the rotor thrust is calculated to satisfy convergence criterion of thrust.

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  • 利用螺旋的升力线模型变分法原理螺旋桨叶片环量分布进行了数值优化

    The optimum distribution of circulation on a marine propeller blade is numerically determined by using the lift_line vortex model and variational calculus.

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  • 扩张增加可提高速度环量但是流动混合损失增加,总恢复系数减小

    The increase of lobe diffusion angle results in the increase of velocity circulation at the lobe exit section, but it raises the mixing loss and lowers the pressure recovery coefficient.

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  • 水轮机偏离最优工况运行时,水流环量使尾水管中心产生低压形成

    In case of the turbine is operated departing the optimum condition, the low presure and the vortex band will be established in the draft tube centre by the flow circulation.

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  • 积分理论叶片绘形的基础上,利用水力设计程序设计了等环量叶片。

    Based on point-by-point integration method and one dimension theory, designed the guide vane which has uniform velocity moment distribution with a hydraulic design computer code of the guide vane.

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  • 结合理论涡流理论,推导了方程广义尾流模型计算旋翼下洗

    Combining momentum theory and vortex theory, rotor circulation equation was deduced. The rotor down-wash flow field was calculated using generalized down-wash flow model.

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  • 环量存在翼飞行的特点扑翼飞行的仿生研究中必须注意对展向环量分析

    The existence of spanwise circulation is a characteristic of flapping wi ngs. In biomechanics study of flapping wings, it is key to analysis of spanwise circulation.

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  • 提取外边界时采用积分算子,线积分改进微小圆面积分,克服了噪声影响

    We changed the curvilinear integral to surface integral in the thin ring around the curve so that the influence of the noise can be decreased.

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  • 本文旋翼广义经典涡流理论出发,通过环量诱导速度的贡献简化处理,推导出旋翼诱导速度的阶分布。

    In this paper, firstly, relations of first two harmonic induced velocities to the lower and same-order harmonic circulations are obtained from the generalized classical vortex theory of the rotor.

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  • 导出了二浅水流动方程速度环量的随体导数表达式,以此为基础,分析了二维浅水流动中旋涡的动力学性质

    The vorticity equation was first established and the characteristics of vortex motion in two-dimensional shallow-water flows was analyzed, and then discrete vortex method (DVM) was briefly described.

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  • 根据我们R4信号问题了解,我们R5境中采用以下战略减少信号问题。

    Based on what we learned from semaphore issues in R4 environments, we employ the following strategies to minimize semaphore issues in R5 environments.

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  • 去年七月份的出口十分惊人,但是今年七月仍然猛增了38.1%。

    But exports leaped 38.1 percent from an already strong showing in the same month last year.

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  • 总的来说,十月份进口增长速度极为惊人同比增长28.7%,比增长20.9%,远远超过了九月份进口

    Over all, imports rose a surprising 28.7 percent, compared with levels a year ago, far surpassing an increase in September of 20.9 percent.

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  • 反射四周散射的光方向无法指定

    Ambient color reflects light that been scattered so much by the environment that the direction is impossible to determine.

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  • 上海7集装箱吞吐同比下降了9%,上涨了7%,深圳7月集装箱吞吐下降了23%,比回升了4%(季节调节后)。

    Container throughput at Shanghai declined 9% YoY in July and increased 7% MoM, while Shenzhen declined 23% YoY in July and increased 4% MoM (seasonally adjusted).

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  • 虽然仍然急剧下降,4到5月份电子产品出口根据季节性调整)与1到3月份平均相比上升将近20%。

    Although still down sharply year on year, electronics output (on a seasonally adjusted basis) in April-May was up by nearly 20% compared with the monthly average in January-March.

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  • 通过密封精确公差径向膨胀精确留实现压缩的精确控制

    Accurate control of compression through close tolerance of gasket groove and allowance for radial expansion.

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  • 本文给出了一种计算噪声时具有正弦鉴相器捕捉特性方法,求得了每个差频周期的平均角频率牵引

    A new method is presented for analyzing the acquisition behavior of second-order PLL with sinusoidal phase detector in the absence of noise.

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  • 研究不同温度、不同蒸汽添加以及不同压力直径条件下挤压膨化大豆活性影响

    The influence of extrusion on activity of soybean urease was studied under different temperatures, different steam amounts and different pressure ring diameters.

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  • 推导了组合型密封压缩变形接触压力计算公式。

    The calculation methods of deformation and contact press force of sealing rings are derived.

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  • 本文含盐丙烷皂化废水生化处理适用流程最佳运行条件进行了研究。

    Biological treatment process applicable to epoxy propane saponification wastewater with high salt content and optimum operation condition are studied in this paper.

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  • 基于件几何模型导出直径计算公式,建立了冷轧件直径壁厚轧制进给之间关系。

    Based on the ring geometrical model, the calculation formulae of ring diameters were DE rived and the relations between ring diameters, thickness and the rolling feeding amount were established.

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  • 本文介绍一具有速度显示搭接精密控制高精度焊接工作台

    The high Precision welding bench with speed display and control of girth lap behavior are described.

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  • 研究理想问题包括问题的存在唯一性

    This paper considers the moment problem for modules over principal ideal domain containing existence and uniqueness of solution.

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  • 研究理想问题包括问题的存在唯一性

    This paper considers the moment problem for modules over principal ideal domain containing existence and uniqueness of solution.

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