参数表示

Therefore, the face-width of the face gear is limited. According to the conditions of undercutting and pointing, the formulae of minimum inner diameter and maximum outer diameter are derived for the shaft angle face gear .

根据产生根切与齿顶变尖的条件，给出了任意轴交角下齿宽设计的公式，定义了两个无量纲参数，即最小内半径系数和最大外半径系数，来表示齿宽的设计范围。

While by introducing the spherical simplex UT, a better-behaved sigma point selection strategy, the number of sigma points required to the same transformation accuracy can be dramatically reduced, and accordingly, the computation burden can be avoided.

在有陀螺模式下，设计了基于误差修正罗德里格参数的SUKF姿态估计算法，在计算过程中同时能够保证四元数始终归一化。在无陀螺模式，基于MRPs的姿态表示和卫星刚体动力学方程，实现了SUKF姿态估计算法。

Intake efficiency is the most fundamental and important parameter for engine performance, yet the open and close timing as well as the lift depth of the intake valves are determined by the contour curve of the camshaft, that means the valve timing and lift depth are constant and fixed.

进气效率，是引擎最基本也是最重要的性能参数之一。而进汽门的开启时间与关闭时间以及扬程的大小是经由凸轮轴的轮廓曲线所决定，亦表示汽门正时与扬程是固定不变的。

The constructed surface not only has the same structure to the bicubic Coons pacth, but also it can help us to obtain different surfaces by changing the values of the parameters. Furthermore, it can accurately represent torus、ellipsoid and so on.

所构造的曲面不仅具有双三次Coons曲面片的相似的结构，可以通过改变参数，得到不同的曲面片，而且还能精确地表示圆环面、球面、椭球面等二次曲面。

By using a tree pictorial structure model to represent the detuned generic people in the video, and a modified Hidden Markov Model to simulate the motion of people between the two frames of the video, a machine learning method is used to the modified HMM to obtain the estimation of parameter of the modified HMM,and to capture the people model from the video.

利用片图模型表示未经学习的人体，改进的隐马尔可夫模型模拟人体在视频序列各帧间的运动，并使用机器学习方法对该改进的HMM进行推理，获取改进HMM的参数，从而获得所需的人体模型。

Transient signals to be restored can be expressed as a linear combination of wavelets whose weight coefficients, dilations and shifts are calculated by the conjugate gradient algorithm in terms of the least mean squared energy criterion.

该方法将要复原的瞬态信号表示成一组子波函数的线性组合，在最小均方能量准则下，用共轭梯度算法求解子波函数的线性组合的幅度、尺度和延时参数。

The results showed that the micro-mixing in ejectors could be described well by using these parameters, and the functional expressions of these parameters were obtained by using the CFD simulation results.

结果显示，利用这些参数可以较好地表示喷射器的微观混合，并利用模拟结果回归了各准数之间的函数关系。

A method to find the exact points of inlet and outlet of film-thickness of the EHL is introduced. A numerical solution of TEHL of the gear using Newton relaxation method and binary search method and the method to find the exact points of inlet and outlet is developed. By means of multiple regresion, a formula to calculate TEHL flash temprature of the gear is obtained.

推导给出了齿轮承载区内热弹流热流密度方程、无量纲参数团表示的热弹流方程和油膜入口点及出口点搜索确定方法，编制了由松弛因子牛顿法、对分法及油膜入口点和出口点搜索方法等组成的便于工程实际应用的齿轮承载区热弹流快速计算程序。

The simulation for the multi-component linear frequency-modulated signals demonstrates the improvement of classification performance compared with time-frequency analysis only.

以分类误差最小为目标，自适应调整支撑矢量核和时频表示核的参数，并对SAR运动目标回波模型——线性调频信号进行仿真实验，实验结果表明这一方法提高了分类精度，改善了分类性能。

The relationship between an object s three dimensional entity and its two-dimensional multi-views can be expressed vividly and visually by Solid Edge V11 parametric molding software, which constructs three-dimensional entity model and represents an engineering object spatially and dynamically.

用SolidEdgev11参数化造型软件建立三维实体模型，以真正的空间概念和动态方式表示工程对象能形象直观地表达一个对象的三维实体与多幅二维视图之间的关系。

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。