曲线拟合

For the key of vector- Distance algorithm , Curve fitting is used for the derivation of deviation angle algorithm, demonstrating the feasibility of deviation angle Algorithm and the error analysis.

针对矢量距离算法的关键，采用曲线拟合对计算偏离角的关系式进行了推导，论证了偏离角算法的可行性，对算法进行误差分析，用归纳的方法推导出计算磁短节中点与直井之间距离的关系式。

In terms of HHT improving, some new algorithms for curve fitting and boundary processing are proposed.

在完善HHT分析方法方面，提出了基于新的曲线拟合及边界处理算法的改进HHT分析方法。

Based on testing data,combining well test,recovery and other geologic data,by pressure diagnose,curve analog and boundary analysis,an accurate reservoir parameter can be gained.

以试井资料为基础，结合试油、试采及其它地质资料通过压力诊断、曲线拟合、边界分析等，得到准确的油藏参数。

Based on the experimental data, all the parameters in the R-G equation are got, which are used to characterize the curve of firstly breaking up and decaying stress of the waxy crude oil at different temperature. The relationship between these parameters and temperature are also studied and made clear.

利用实验数据获得了不同温度下描述大庆原油初次裂降过程的R-G模型方程中的模型参数，对模型中的参数与温度的关系进行了曲线拟合，得到了各参数与温度的关系。

To this end, the ultrasound cardiograph is filtered and fuzzily boundary enhanced, a threshold is set to obtain a binary image, then the heart's boundary is got through ellipse curve fitting, cubic spline interpretation and smoothing.

首先对超声心动图像进行滤波以消除图像中的噪声，并运用模糊数学理论进行模糊边缘增强，提取超声心动图像的内外膜边缘信息；接著对超声心动图像作二值化处理和椭圆曲线拟合，初步得到心脏的内外膜边缘；再采用相应的三次样条插值和平滑技术，得到光滑、连续的心脏内外膜边缘。

According to the requirements of line generalization,new algorithms for identifying characteristic line points are presented.

针对手形的特点和现有手形认证方法的不足，提出了一种基于曲线拟合的手形生物特征认证新算法。

The results obtained from fit of response curve were agreement with mechanism of chemisorption.

吸附曲线拟合的结果证实了特异性吸附属于化学吸附。

E., monodentate,bidentate and complicated multidentate chain-structured or web-structured CIPs.

利用曲线拟合技术对其光谱的ν1-SO峰进行分峰，获得了不同湿度下ZnSO4微液滴中各组分的量化信息：高湿度时，液滴中主要包含自由的水合SO；随着湿度降低，自由SO逐渐向单齿、双齿接触离子对转化，并在湿度为66%和34%时分别达到其最大值；继续降低湿度，复杂的链状或网状接触离子对逐渐成为液滴中的主要成分。

The analyses results show this long wavelength emission peak should be attribued not to the emission from aggregators or excimers in films but to the vibronic transition from S1 excited state to S0 ground state.

在对其采用曲线拟合的基础上，进一步对薄膜样品的带隙下激发谱和选择激发荧光谱进行了分析，从实验上论证了长波段的发射峰来自于激发态S1到基态S0的振转跃迁，排除了薄膜聚集体和激基缔合物发光的可能性。

In addition, many studies of patients with AVN showed plenty of special characteristics,such as age distribution and bone quality.Objective:To study the geometric features of proximal femur for the Chinese AVN population,in order to prove the existence of special characteristic of proximal femur for the disease and then develop an AVN-specialized stem evaluated by a validated finite element analysis.Methods:1.The author investigated the standard X-ray data of 127 cases(179 hips) with definite diagnosis of AVN to provide anatomical references for this disease.At the same time,we conducted a meta-analysis of anatomical studies of normal proximal femur data,including the section of LT+20,LT,LT-20 and CFI to identify the potential difference between AVN and normal population.

方法1、通过研究AVN患者标准X线正、侧位片127例(179髋)，获得股骨近端的解剖学数据，利用荟萃分析的方法比较AVN患者股骨近段髓腔特征平面(LT+20，LT，LT-20)及CFI的改变与以往研究数据的差异，并利用创伤性FNF患者资料代替正常人股骨数据进一步比较髓腔前、后、内、外四条曲线段上的差异。2、通过结合现代CAD技术，将内、外、前、后曲线拟合到AVN柄的外形上，选用短柄假体设计，近段设计利用AVN患者骨髓腔CT相对应位置的断面进行修正，设计AVN人工股骨柄。3、计算机三维有限元分析：①使用CAD软件SolidWorks和有限元软件Ansys所建立的髋关节股骨侧假体置换后的三维有限元模型。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐