证实了展开基点对曲面近似展开结果具有较大的影响，并证明了最佳展开基点位置存在的客观性。
It is proved that the base development point has more affection to approximate development result and has its objectivity.
首次选取泰勒级数的部分二次项，用一个距原点最近点处拟合的超低维曲面近似极限状态面。
Firstly part of quadratic term of Taylor series is chosen; a low-dimension surface is used to approximate limit state surface; and the modified reliability formula is derived.
其中利用了样条磨光方法对地形高差离散值进行拟合磨光求得曲面近似函数，用之参与计算。
The spline polishing method is used for dispersion value of typography elevation difference to conduct fit polishing so as to get the near function which is used in calculation.
调整曲线曲面的形状及两相邻曲线曲面的近似合并问题都是CAGD领域中的热点问题。
Changing shape of curves and surfaces and approximate merging two adjacent curves and surfaces are both hot topics in CAGD.
板材不可展曲面的近似展开，对于完善板材冲压成形技术，有着重要的理论和实用价值。
The approximate development of the blank workpiece undevelopable surfaces have great theory and practice significance to perfect pressing forming technology.
这里给出了气圈颈部曲面的近似表达式及气圈颈部最小半径的近似计算，计算结果与精确解很接近。
In this paper, the approximate equations of the balloon neck surface and of the minimum neck radius are derived, which …
但是事实上它就是，如果你考虑一下的话，就是在给定点上的,最好的近似曲面的平面。
But, it's really, if you think about it, you will see it's really the plane that's approximating the surface in the best way that you can at this given point.
最后通过曲面片的近似展开，验证了所得结论的正确性，也给出了最佳展开基点的搜索方法。
Finally the correctness of conclusion is verified by approximately developing curved surfaces, meanwhile the searching method of the best development base point is given.
在NURBS曲线离散逼近算法的基础上，进一步提出了NURBS曲面离散逼近算法，并得出曲面面积近似计算方法。
Depended on the approximating subdivision algorithm of curve, the subdivision algorithm of NURBS surface has further proposed. And it draws the approximate calculating method of NURBS surface areas.
分析了空间曲面的几种近似映射方法，并同时分析了各种映射方法的优缺点；
Then several planar mapping methods of curved surface as well as their advantages and disadvantages are analyzed.
在对不可展曲面三角线法近似展开误差理论分析的基础上，实现了三角线法近似展开及误差分析程序系统。
Approximate development of triangle line and error analysis program system are realized on the basis of approximate developing error theoretical analysis of triangle line of skew curved surface.
该法将熔体前峰面的追踪问题转换为带权曲面上任意两点间近似最短路径的求解。
An equivalent flow length method was used to predict the filling pattern and transferred the tracing of melt front to computing weighted approximate shortest flow path on finite element mesh model.
其二为一种修整的线接触，展成的等螺距齿面与理论轨迹曲面沿某一空间曲线近似相切。
The new tooth surface can be prolonged by the normal profile of the internal toroidal surface, or replaced by an equal pitch helical surface.
对同一不可展曲面的展开可有多种近似展开方法，究竟哪种方法更为合理应建立相应的评判标准。
There are many different methods to develop the same undevelopable curved surface, the criteria must be created to evaluate which one is the most appropriate.
采用了最小平方函数和拉普拉斯算子范数来求得解的近似，然后进行自由曲面的误差修正。
In this paper, the least square and Laplace's method are used to calculate the approximate solution, to correct the error of the free-form curved lens.
把气敏阵列提取的二维交叉敏信号抽象为空间曲面，然后把曲面切割成小块，每小块可近似为平面。
The two dimensional cross sensitive signals of this sensor array are projected into a curved surface, which can be divided into several planes.
本文在基于曲面拟合的水泵水轮机全特性曲线的变换新方法的基础上，将移动最小二乘近似应用于对全特性的曲面拟合。
In this paper, moving least square(MLS)approximation is applied to simulate the complete characteristic curves of reversible pump turbine based on the surface fitting.
该算法采用近似等弧长方法对参数曲面重新进行参数化，使曲面上各扫描点之间的弧长间距近似相等。
This algorithm generates nearly arc-length interval inspection points by using nearly arc-length based parametric redistribution method.
用最小势能原理推导弹性薄板变形曲面及应力，均获得精度较高的近似解。
The approximate solution of deformation surface and stress of elastic thin plate is very accurate.
横梁是个近似的长方体，它的上表面是曲面与面板的下表面相吻合，两者固定连接。
The beam is one cuboid with curved upper and lower surface fitting each other closely and fixed together.
在分析自由曲面一般展开方法的基础上，提出了近似展开样板误差的评价方法。
Based on the analysis of development methods to free-form surface, the error evaluating method of development graph is put forward.
利用空间坐标变换法，得出弯管状屏蔽体的曲面方程式，用精确解析解取代了常用的数值近似解。
The camber equation has been established by means of space alternate coordinate; the numerical approximate calculation is replaced by accurate calculation.
利用空间坐标变换法，得出弯管状屏蔽体的曲面方程式，用精确解析解取代了常用的数值近似解。
Using the method of space alternate coordinate, the bound box mathematical models for various shield configurations have been constructed.
针对复杂曲面工件内部缺陷的超声检测，提出了一种新的近似等弧长超声检测轨迹生成算法。
Aimed at internal defect ultrasonic inspection for sculptured surface parts, the paper presented a new nearly arc-length approach to path generation.
具有适当半径和中心角的圆环扇形可取为不可展正螺旋面一个导程的曲面的近似展开图。
A circular ring sector with appropriate radii and central angle may be taken as approximate developing pattern of a coil of an undevelopable right helicoid.
具有适当半径和中心角的圆环扇形可取为不可展正螺旋面一个导程的曲面的近似展开图。
A circular ring sector with appropriate radii and central angle may be taken as approximate developing pattern of a coil of an undevelopable right helicoid.
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