然后用三次样条法拟合剖面边缘曲线并插值采样，把立体树冠分解成许多微小的切片分别求体积和表面积，依次累加就得到所需结果。
These data are fit with method of spline and resampled to divide crown into many small slices, whose volume and surface add up to the result.
指出用三次样条插值函数法只能解决由一组曲线族组成的图表处理问题。
The use of cubic spline interpolation function method can only solve the processing problem of nomographs consisting of one family curves.
本文给出了三次样条配置法在流体力学问题数值解中的应用以及在这一领域的新进展。
This paper presents techniques for the numerical solution of problems in fluid mechanics using cubic spline collocation and some of their recent developments in this field.
根据凸轮机构的检测数据利用三次周期样条函数插值法对凸轮实际廓线进行曲线拟合。
Curve fitting of the actual CAM profile with the Cubic-periodic spline function according to the measured data of the CAM.
因此，三次样条函数法是计算土壤水分扩散率的一种简便可行的方法。
Therefore, the method is a simple workable one for calculation of soil water diffusivity.
提出了利用三次样条插值法，处理BOC调制信号相关谱主峰及副峰的数据，以提高相位测量精度的算法。
A method using cubic-spline interpolation to process correlation peaks was proposed to improve the precision of BOC-modulated signal PN code phase measurement.
它在二维三次卷积插值法的基础上利用三次样条插值法的插值函数具有三阶连续导数的性质而得来的。
It is acquired from that it makes use of that the interpolation function of cubic spline interpolation has a continuous third derivative on the base of two-dementional cubic convolution interpolation.
采用累加弦长三次样条参数曲线，先求出离散点处两个方向的切矢，进而求解出该离散点的法矢。
This paper presented the solution of normal vector by using the method of the accumulative hypotenuse trispline curve.
本文提出了一种建立空间列表曲线的数学模型的方法——空间三次参数样条曲线法。
This paper proposes a method to build the mathematical model of special spline curve.
本文提出了一种用三次样条函数模拟双次标准加入法测量方程，直接求解离子浓度的自动算法。比较了三种不同边界条件下用模拟函数计算离子浓度的结果。
An automatic algorithm for directly Determining the ionic concentrations by simulating the measurement equations of the double standard addition using the cubic spline function, has been presented.
同时，普通克立格法与传统航空物探数据内插方法——三次样条函数法所得的表面预测图相似。
The prediction surface that Ordinary Kriging created and the surface that three-splinecreated are very similar.
采用三次样条函数能量法，对冷轧轧后带材在纵向残余应力作用下的大挠度屈曲变形和临界失稳问题进行了研究。
The large deflection buckling deformation of cold rolled strip acted on by residual stress is studied by using 3-Power spline function energy method.
最初样条配置法是利用三次样条函数并在自然节点上进行配置，但精度不够高。
Original spline collocation methods collocate at the nodes by cubic spline functions, but the precision isn't good.
汽蚀曲线绘制方法有传统的有手工绘法、多项式拟合法、非线性拟合法、三次样条插值法等。
Cavitation curve drawing method of the traditional hand-drawn method, polynomial fitting, non-linear fitting, cubic spline interpolation method.
本文在轧件宽厚比为625的条件下，用三次样条函数有限条法研究了冷轧带材三维应力的分布问题。
Under the width to thickness ratio 625 of strip, this paper studies the 3-dimensional stress distributions of cold strip rolling by cubic spline function finite strip method.
采用三维有限元法计算了斜齿轮副啮合刚度，用三次样条插值拟合得到时变啮合刚度函数。
The meshing stiffness is calculated by employing 3-dimensional FEM and its function is formed by cubic spline interpolation and approximation of the discrete mesh points in a mesh period.
采用三维有限元法计算了斜齿轮副啮合刚度，用三次样条插值拟合得到时变啮合刚度函数。
The meshing stiffness is calculated by employing 3-dimensional FEM and its function is formed by cubic spline interpolation and approximation of the discrete mesh points in a mesh period.
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