species-area curve

The species-area curve and the important value-area curve of the plant community were formulated based on the investigation into 3 600 m2(60 m×60 m) sample plot set in the semi-moist evergreen broad-leaved forest in the Gaoligong Mountains.

对高黎贡山中山湿性常绿阔叶林3 600 m2(60 m×60 m)样地构建种-面积曲线和重要值-面积曲线,结果表明:基于种-面积曲线确定的群落最小取样面积取值基本一致,为2 000 m2左右,但取值较大,在云南复杂的山地环境中很难应用。

According to the investigation scale and the research purpose, the basic conditions for species-area curves on Loess Plateau have been analyzed.

探讨了黄土高原4种乡土牧草的种-面积曲线应遵从的基本条件,分别对7个经典模型进行拟合,从中确定以下4个模型作为研究方法,S=b+alnA、S=aln(bA+1)、S=aAb、S=aA/(1+bA),采用了SAS8。

Empirical Bayes method(EBM),nonparametric methods (NPMs) (with include jack knife and bootstrap methods) and extrapolation of species area curves were used to estimate the number of species ( NS )in each of the five types of plant communities in Dongling Mountain,Beijing,China,and their performances were also examined.

采用经验贝叶斯方法、非参数方法（刀切法和自助法）和种－面积曲线外推方法对北京东灵山地区５种类型植物群落的物种数目进行了估计，考察了这些方法的估计行为，从中得出如下结论：（１）只要抽样强度不是很小，经验贝叶斯方法就能给出群落物种数目很好的估计，但与非参数方法相比，其估计的标准差较大；（２）在适当的抽样强度下，非参数方法也能给出群落物种数目很好的估计。

area of midship section

船体中段剖面面积曲线

nose-to-tail drag curve

机身面积曲线，纵向阻力曲线

Numerical Simulation of the Effects of Microbubble Drag Reduction of Different Curves of Area of Transverse Section of the Stern

尾部横剖面面积曲线变化对气泡减阻效果影响的数值模拟

Numerical Simulation of the Micro-bubbles Resistance Reduction Effect of Different Curves of Transverse Sectional Area

高速艇尾部横剖面面积曲线变化对气泡减阻效果影响的数值模拟

area under normal probability curve

正态概率曲线下的面积

Application of the Symmetry in the Calculation of Curvilinear Integral and Surface Integral;

对称性在曲线积分和曲面积分计算中的应用

The application of symmetry to the calculation of curvilinear integral and camber integral;

对称性在曲线积分及曲面积分计算中的应用

Application of Odevity and Symmetry in Curvilinear Integral and Surface Integral;

奇偶性对称性在曲线积分和曲面积分中的应用

Application of Newton-Lebniz formula in plane curve integral and space curve integral.;

牛顿-莱布尼茨公式在平面曲线积分和空间曲线积分中的应用

The area under the response curve will be unchanged.

响应曲线面积没有什么变化。

A Method of Area Computation Based on Ferguson Curve;

一种基于Ferguson曲线的面积计算方法

Algorithms for interactive modifying area bounded by Bézier curves;

Bézier曲线包围面积的交互修改算法

The Breakthrough of Teaching the IMfflculties in Curve Integral and Curved Surface Integral;

关于曲线积分和曲面积分教学中几个难点的突破

Surf-Surf Intersection Curve

曲面与曲面相交求曲线

A Further Discussion about Calculating Plane Figure Quadrature by Applying Curve Parametric Equation;

由曲线参数方程求平面图形面积的进一步讨论

The Calculation of the Areas of Plane Regions Bounded by Curves Given by Parameter Equations;

参数方程表示的曲线所围平面区域面积的计算

The Study of Polar Coordinates Curve and the Area of the Planar Figure Surrounded by This Curve;

浅析极坐标曲线及其所围平面图形的面积

To study relationship area under ROC curve with intercept and slope.

目的　探索ROC曲线下面积与ROC曲线在ND轴上的截距、斜率的关系。