• A non-dimensional expression, which shows the general variation of the backflow distance of smoke and hot gases during a roadway or tunnel fire, was derived through dimensional analysis.

    应用因次分析法推导出表征巷(隧)道火灾烟流滚退距离变化规律的通用无因次表达式,该表达式包含影响滚退距离的火源热释放速率、通风风速、巷道倾角和形状等因素。

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  • Ship propeller noise can be predicted by non-dimensional analysis of ship model propeller noise.

    通过无量纲分析船模螺旋桨噪声可以预报实船的螺旋桨噪声。

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  • On the basis of the experimental data, derived was the "non-dimensional volume-flow rate formula of a falling-back liquid curtain".

    根据实验数据,推导出了“回落液幕无量纲体积流率公式”。

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  • The change of port layout Angle has little effect on the flow coefficient while playing an important role in the non-dimensional swirl.

    气道布置角度的变化对流量系数影响不大,但对无因次涡流有很大影响。

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  • It is demonstrated that the errors of the unified valve model are dependent on the damping coefficient alone using a non-dimensional approach.

    采用非量纲分析法,验证了统一模型的误差仅依赖于阻尼系数。

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  • The first order and second order incidence degree formulae can satisfy the requirement of specification, and possess isotonicity after non-dimensional disposal.

    其中一阶和二阶差分关联度能满足规范性要求,具有无量纲化后的保序性。

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  • The heat transfer performance of plate fin and staggered heat sink is comprehensively analyzed by the use of quality factor "F" which is a non-dimensional variable.

    本文引用无量纲品质因数F,分别对平板和叉排散热器的换热性能进行了综合分析。

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  • The non-dimensional pump head coefficient tends to become larger than the quasi-steady value at the very beginning of the start, which indicates obvious transient effect.

    在启动初始阶段,无量纲扬程呈现很大值,继而迅速减小到低于准稳态假设值,表现出明显的瞬态效应。

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  • The vibration characters of the labyrinth gas seal device are analyzed with non-dimensional parameters in ANSYS and the non-dimensional frequencies and modes are obtained.

    对各参数进行无量纲处理,借助ANSYS软件分析篦齿封严组件振动的特性,获得结构无量纲频率和振型;

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  • At first, control law of the autopilot equipment was given, then the non-dimensional dynamic equations of the single rotor helicopter with autopilot equipment were derived.

    文中首先给出自动驾驶仪的调节规律,继而列出装备有自动驾驶仪的单旋翼带尾桨式直升机的无量纲运动方程。

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  • The paper brings forward and analyzes the non-dimensional formulas of setover eccentric CAM from the aspects of the travel, displacement, speed and velocity of the moving parts.

    提出了偏置式偏心圆凸轮机构从动件的行程、位移、速度、加速度的无量纲表达式,并对其进行分析。

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  • This method utilizes some of non-dimensional parameters and combined parameters, in order to interrelate the bearing load with parameters of working process and structure of a diesel engine.

    本方法是利用了一些无因次参数及综合参数,使轴承负荷同柴油机工作过程及结构的某些参数联系起来。

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  • Measurement with CCD is a very effective non-contacted method for the dimensional measure, which is now widely applied to the precision measure of the part dimension.

    利用CCD进行尺寸测量是一种非常有效的非接触检测方法,这种方法被广泛的应用于零件尺寸的精密测量中。

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  • In grinding process, the dimensional precision of work piece shows its uncertainty and non-linearity because of the machine tool property, the grinding wheel, the clamp, etc.

    在磨削加工中,受机床、砂轮、工件、夹具等众多因素的影响,加工工件的尺寸精度和精度一致性呈现出不确定性和严重的非线性。

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  • A hail cloud model that is two dimensional elastic non hydrostatic, USES a terrain following coordinate system and includes double parameters for ice phase microphysics, has been developed.

    建立了一个适用于复杂地形的冰雹云模式。模式是二维、弹性、非静力、采用地形跟随坐标、包含双变参数冰相微物理过程参数化。

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  • A semi analytical procedure for determining the dynamic flexibility coefficient of the three dimensional viscoelastic non homogeneous foundation is developed.

    应用样条半解析法求解非均质粘弹性地基的动力柔度系数。

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  • Two dimensional non equilibrium sorption pseudo steady state model of coalbed methane for vertical well is derived in combination of an American model with the filed situation.

    借鉴美国现有模型,结合我国现场实际情况,建立了二维煤层气垂直井的非平衡拟稳态井底渗流数学模型。

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  • A numerical distributed Transfer Function Method (DTFM) is developed for analysis of complex one dimensional non uniform distributed parameter systems.

    本文给出了一维复杂非均匀分布参数系统的数值传递函数方法。

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  • Two dimensional incompressible N S equations for non Newtonian fluid was solved by using MAC method in staggered grids.

    在交错网格中,用MAC方法求解非牛顿流体的二维不可压NS方程。

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  • Generalized coherent states of a non harmonic oscillator in a finite dimensional Hilbert space are constructed and some quantum statistical properties are studied.

    在有限维希尔伯特空间中构造了非简谐振子的广义相干态,并研究了其量子统计特性。

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  • This paper studies the flutter of a two-dimensional airfoil in the incompressible flow with cubic non-linearity in the plunging direction.

    研究了在不可压缩流中具有立方非线性俯仰刚度的二元机翼的颤振问题。

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  • The three dimensional non linear finite element analysis of the transient temperature field during intermediate frequency quenching of diesel crankshaft was simulated by using of ANSYS.

    利用ANSYS有限元分析软件,采用三维非线性有限元方法对柴油机曲轴中频淬火瞬态温度场进行了模拟计算;

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  • The effect of sectional area of surge tank on stability of turbine regulation system has been analyzed by using the mathematic model of the non dimensional parameters of the whole system.

    运用有调压室的水轮机调节系统数学模型,引入无量纲参数,详细分析了调压室断面积对调节系统稳定域的影响。

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  • The linear treatment for the expected equation and non dimensional treatment for the experimental data are produced in analysis process.

    对期望方程进行了线性处理,对试验数据进行了无量纲化处理。

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  • With the non staggered grids, a three dimensional quasi state laser remelting problem, considering heat transfer and fluid flow, is numerically simulated.

    对三维准稳态激光重熔问题进行数值模拟,模型考虑了熔池内金属液体的流动和换热。

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  • One dimensional shear strain rate gradient formation of the second order is proposed based on the non-local continuum model.

    根据非局部连续介质模型,提出了一维二阶剪切应变率梯度格式。

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  • According to porous medium theory, non regional heat balance method is adopted, heat transfer one dimensional mathematical model in CDQ chamber is established.

    根据多孔介质理论,采用非局域热平衡方法,建立了干熄炉内传热的一维数学模型。

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  • The results show that the entropies of boson field and the fermion field of six dimensional non-stationary black hale have similar formulae only with a coefficient difference.

    结果显示六维动态黑洞的玻色子熵和费米子熵有相同的形式,它们之间只相差一个系数。

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  • Based on the negative eigenvalue theory we discuss the non-diagonal disorder and dimensional effects for the electronic structure in low-dimensional disordered systems.

    运用负本征值理论,探讨了非对角无序、维数效应对低维无序系统电子结构的影响,研究表明,非对角无序和维数效应对低维无序系统电子结构的影响很大。

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  • Based on the negative eigenvalue theory we discuss the non-diagonal disorder and dimensional effects for the electronic structure in low-dimensional disordered systems.

    运用负本征值理论,探讨了非对角无序、维数效应对低维无序系统电子结构的影响,研究表明,非对角无序和维数效应对低维无序系统电子结构的影响很大。

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