参数曲线

They are cardinal splines and the linear combination of freedom in adjusting curves and surfaces.

多结点参数的改变增加了曲线交互调节的自由度。

A novel no touch measuring method for traditional products was put forward and a precise model of Direct Linear Transform was presented for the aberration in the images occurred at every turn. Rectangle mark tag and location parameter are no longer needed in this algorithms. A method of tolerance reckon by curve equation was also provided. In order to raise the operation speed Hough circle detection method was improved. In the meantime circle detection method to images with more than one circle was applied, so that the concentricity calculation is possible.

论文的创新点是，提出了传统机械产品的非接触式测量方法，特别针对图像采集环节最容易出现的畸变现象，提出了一种严密的直接线性变换模型，该算法既不需要在影像上有框标，也不需要有摄影机内外方位参数的起始近似值，具有显著优点；提出了利用曲线的方程来确定公差的方法，对传统的Hough圆检测方法进行了改进，提高了检测速度，同时将圆检测用于存在多圆的图像，使多圆的同心度检测成为可能。

In order to check and control trajectory of the curve of punch, the author studies the location principle of the punch, and determines the parameters that need to be measured during the punch works.

为对穿孔机曲线轨迹进行检测与控制，文章分析了穿孔机的定位原则，确定了穿孔机施工时需要测量的参数。

On the basis of not changing the instrumen t resolution, wavelet analysis is used t o improve the vertical resolution of log ging curve to make the processed logging value approach the true resistivity val ue for the purpose of more accurate rese rvior parameters computation and thin be d correlation.

介绍了在不改变仪器探测深度的基础上，应用小波分析提高测井曲线纵向分辨率，使处理后的测井值更接近地层的真值，使精细求取储层参数和小层对比成为可能。

The realization of double flow rate well testing techniques is descript in this paper and the way of well testing data interpretation is also provided from the normal analysis and double logarithmic curve.

描述了二流量试井工艺的实现，从常规分析和双对数曲线拟合两个方面，给出了二流量试井的资料解释分析方法，分析认为二流量试井同样可以计算出正常关井测压力恢复资料所解释的油藏及流体参数。

In Chapter 5,Use the logarithmic derivative formula of Г function, analysis the characters of X2distributed density function in detail, and the effects of change of the parameter on density curve.

利用Γ函数对数微商公式，较详细地分析了X~2分布密度函数的性质，研究参数n对密度函数曲线的影响。

Logistic curve model for evaluation of regional water resources sustainable utilization was proposed by simulating the nature change process of water resources sustainable utilization.

通过模拟区域水资源的自然变化过程，提出用于区域水资源可持续发展评价的Logistic曲线模型，耦合后的免疫禁忌搜索算法用于模型的参数优化。

Stroke; Clinical study model; Study of syndrome; Curve Estimation ; Logistic Regression; Study of complexity; Unlinear science

中风病；临床研究模式；证候学研究；曲线参数估计； Logistic回归；复杂性研究；非线性科学

Based on the elastic theory of large deflection and by taking into account the variation of the axial force and its effects on bending deformation of the drillstring in vertical section,the vibration of the drillstring induced by fluctuating weight-on-bit is described by a parametrically excited system.A Mathieu equation describing the system is established by Galerkin Method.By extending the solution into a Fourier series,the curves of dynamic bifurcation values and the dynamically unstable regions surrounded by the curves are presented.

基于弹性大变形理论，考虑到轴力沿钻柱轴线的变化及其对钻柱弯曲变形的影响等因素，将受自重作用的铅垂井段钻柱在波动钻压激励下的振动转化为一个参数激励系统，用Galerkin方法首次得到了描述此系统的Mathieu方程，并通过将方程的解展成富里叶级数的方法，得到了该振动系统的动力分岔值曲线及其所包围的动力不稳定区。

The variation rule of strength parameters associated with the matric suction were studied.

分析了强度参数随吸力的变化规律和广义土-水特征曲线的合理性。

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。