曲线

Secondly, in our methods, the essential geometry of the image single axis geometry may be specified by six parameters and this may be estimated from one conic and one fundamental matrix (a total of 12 parameters) or may be minimally estimated from two conics (a total of 10 parameters).

本文证明了单轴旋转运动的不变量可以通过一个基本矩阵和一条二次曲线来确定，在这种情况下，由于基本矩阵的自由度为7，二次曲线的自由度为5，所需确定的参量个数仅为12，大大减少了不变量的计算量；本文同时证明单轴旋转运动的不变量可以通过最少两条二次曲线来确定，在这种情况下所需确定的参量个数仅为10，该方法是目前同类算法中参数最少的；本文提出了用多条二次曲线求解单轴旋转运动的不变量的最大似然估计算法，其所需确定的参量个数为6+2n，其中n为二次曲线的个数，该公式更深刻地反映了二次曲线与不变量的参数关系。

In accordance with two independent rectangular coordinate systems, this paper discusses the complete coordinate formula of the middle spiral curve, the two groups' basic relation which is different to the general one and the significant intentions for averting chain breaking, which comes from the line parameter selected to compute the right coordinate of the curve points.

从二个独立的直角坐标系出发，分析中插缓和曲线点位坐标计算的完整模式，说明中插缓和曲线有别于一般缓和曲线的两种基本关系，指出有效选用连接参数m值在准确计算中插缓和曲线完整点位坐标避免曲线断链的重要作用，结合实例阐述任意测站坐标变换技术计算中插缓和曲线点位坐标的公式和应用效果

A method of construct a quadratic uniform B-spline curve through data points is given.If the relative curvature of a certain curve on the first control point and the direction angle of the first port's tangent vector is given,here can get the whole curve by using the character of the port of quadratic uniform B-spline curve.

提出了一种二次均匀B样条插值曲线的构造方法，首先给定某一段曲线首点的相对曲率和该段曲线的首端切矢量的方向角，利用二次均匀B样条曲线的端点性质，求出其余各段曲线控制顶点，来生成整条插值曲线。

The computing plots of the solutions from the two methods were inconsistent under the specified boundary-initial conditions, which stirred up the debate of the effectiveness of Maxwell's equations in lossy medium. It is found that the differences between the two numerical curves can be viewed as the Gibbs phenomenon caused by cutting off the high frequency components in computing the infinite integral of the numerical curve of Harmuth's solution.

通过比较两种解析解的数值曲线得出：两者的差异在于求解Harmuth解的数值曲线时，采取无穷积分的高频截断近似产生了吉布斯现象；在计算Harmuth解的数值曲线时不断增大积分上限，其数值曲线的振荡不断向不连续点处收缩，而且衰减加快，因此在求解Harmuth解的数值曲线时，若积分区间取为理想无限大，则可以预见相同计算精度下两种方法的电场解的数值曲线是一致的。

On the basis of error processing interpolation theory of non-circular curve and data processing function of Excel, an accurate model of curved parts can be made in Solid Edge with establishing the point curve in Excel.

研究了复杂曲线零件的精确建模，在研究非圆曲线插值算法理论的基础上，利用Excel的数据处理功能，对函数进行误差处理插值计算，在Solid Edge环境中使用Excel创建点曲线的方法进行曲线零件的精确建模，探索出了一种Excel与Solid Edge的完美结合方法，通过凸轮零件精确建模的实际案例，示出了曲线零件建模的整个过程，给出了这种方法在分段曲线中的具体应用。

The motors' load characteristic curve is one of the main characteristic curves.

常见的发动机特性曲线有负荷特性曲线、万有特性曲线、速度特性曲线、外特性曲线、调速特性曲线等。

Based on the characteristics of transaction curve and parallel line,the calculation formulas of boundary line parameters and length are derived,providing theoretical support for higher grade highway design,and determination,as well as practical formula for calculation,also providing mathematics model for dealing with linear data which are obtained through road survey.

本文从讨论缓和曲线边线的性质着手，对缓和曲线的曲线长度与对应的曲率半径变化规律作了分析比较，证明了缓和曲线的平行线不再具备缓和曲线的性质，如果把边线仍当作缓和曲线处理则会引起路线宽窄的变化。

A sandwich ELISA was established taking the antiserum as the primary antibody. The sensitivity of the ELISA was 0.412 ng GH/ml of sample. Inter-assay and intro-assay coefficients of variation were 2. 58％(n=6) and 5. 69％(n=6) respectively. Serial dilutions of serum and pituitary homogenate from orange-spotted grouper yielded dose response curves that were parallel to the standard curve. And the GH of Acanthopagrus butcheri was also parallel to the standard curve. Prolactin of goldfish and recombinant growth hormone of common carp showed no cross-reactivity with the antiserum of orange-spotted grouper GH. It showed that the established RIA was specific and sensitive.

以斜带石斑鱼重组GH抗血清为第一抗体，羊抗兔抗体为第二抗体建立了双抗体夹心酶联免疫测定法，该系统的灵敏度为0.412ng GH／ml(n=6)，组内变异系数为2.58％(n=6)，组间变异系数为5.69％(n=6)，斜带石斑鱼血清和脑垂体稀释液曲线与斜带石斑鱼重组GH蛋白的标准曲线相平行、黑棘鲷GH的系列稀释曲线与标准曲线相平行，金鱼催乳素、重组鲤鱼GH的系列稀释曲线与标准曲线不平行，表明建立的斜带石斑鱼GH ELISA具有良好的特异性和重复性，灵敏度达到了测试血清样品中GH的水平。

In curve fitting, the speed-flow rate curve shows that the curve of 16mm pitch wheel is a line and that of 12mm pitch wheel is a down-winding curve, the speed-pressure curves of two pitches both are up-winding curves and in the resistance-flow rate curves the curve of 12mm one has lower slope than that of the 16mm one.

曲线拟合结果显示，在转速-流量曲线中，16mm螺距叶轮为一直线，12mm螺距的叶轮为一向下弯曲的曲线；转速-压力曲线显示两者都是向上弯曲的曲线；阻力-流量曲线显示12mm螺距的叶轮斜率较小。

The paper discuss about the space curve and plane curve, and introduce the basic concept and the relations of them which we use to solve problem.

介绍了空间曲线和平面曲线的基本概念，空间曲线和平面曲线的关系，利用空间曲线与平面曲线的关系解题。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。