特征参数

Through the analytical solutions of momentum differential equation for a stream with varying mass, a general characteristic parameter , depending on structure scale and flow parameter, is introduced.

在径向流体分布器的变质量动量方程理论模型的基础上，通过对模型解析解的分析，获得了包括径向分布器结构尺寸和流动参数的特征参数k／C。

The characteristic parameters of interferences are obtained by FRFT. Then the adaptive interference canceler is designed according to the estimated interference parameters.

该方法首先对观察信号进行FRFT，估计干扰的特征参数，利用估计出的干扰参数构造自适应干扰对消器，将干扰去除。

The calculation of chaos and fractal characteristic parameter, the correlation, is studied.

摘要研究了混沌与分形的特征参数―关联维数的计算方法和参数的选择。

Combustion parameters such as ignition temperature, peak temperature of maximum weight loss rate, burnout temperature, maximum rate of combustion, and combustibility index were analyzed.

分析了燃烧特征参数如着火温度、燃烧速率最大时的温度、燃尽温度和最大燃烧速率以及燃烧特性指数。采用Freeman-carroll法计算了燃烧动力学参数。

Firstly, the approach formulates a cost functional to turn the inverse problem into a constrained minimization problem according to least squares criterion, then the resulting constrained minimization problem is transformed into an unconstrained minimization problem by using a penalty function technique, and then the closed Fr chet derivatives of the Lagrange function with respect to the properties are derived based on the calculus of variations, finally, one can solve the resulting problem by using any gradient-based algorithm and the finite-difference time-domain method.

该方法首先以最小二乘准则构造目标函数，将逆问题表示为约束最小化问题；接着应用罚函数法转化为无约束最小化问题；然后基于变分计算导出闭式的拉格朗日函数关于特征参数的Fr chet导数；最后借助梯度算法和时域有限差分法迭代反演德拜模型参数。

Some groups of numerical models were built with different design param- eters of die,geometric parameters of gear,friction conditions or processing conditions,and the service loads were in- vestigated.

以成形时所需载荷为评价指标，就影响成形工艺的模具设计参数、齿轮特征参数，摩擦条件和工艺条件进行分组建模分析。

Due to the complex effects of geometric parameters on the stress concentration factor of welded steel tubular joints, there exist some uncertainties in the results obtained from theparameter equations.

由于各几何特征参数对焊接钢管节点应力集中系数影响复杂，参数方程给出的计算结果都存在不同程度的不确定性。

Through analyzing the harmonic component of the coupler curve of RCCC mechanism,the relationship between the harmonic component of the rotation-angle function and the dimensional type of the RCCC mechanism was discovered.

通过对其连杆轨迹谐波成分的理论分析，发现了连杆转角函数谐波特征参数与机构尺寸参数的内在联系，进而确定了机构的基本尺寸型。

The three characteristic parameters as input,we obtain the apple grade based on fuzzy al

要由苹果的大小、形状和成熟度决定；该分拣系统有三个输入参数即大小、形状和成熟度，其三个特征参数的提取应用了数字图像处理技术；一个输出变量即苹果等级分类，分别标为A、B、C三类。

The method of simulate wavelet edge multi-scale detection was used to extract feature of characteristic bands successfully,based Gaussian filter and vector differential operator.

提出了基于高斯滤波与矢量微分算子的近似小波变换多尺度杂交玉米种子电泳图谱特征谱带边缘检测算法，成功实现了特征谱带特征参数的提取。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。