曲面

The method of designing artificial knee joints through surface matching between outer face of the replaced knee joint and femoral surface of the massive allogenic bone is proposed to simplify the clinic operation.

提出了依据手术切除部位膝关节的外表面与异体骨的股骨端面的曲面匹配结果来设计人工膝关节面的方法，简化了手术方案；完成了髓内针﹑融合笼及其辅助部分的研制；对髓内针的定位位置和方向，髓内针和融合笼的联接方式进行了深入的研究，提出了相应的解决方案。

The main contents includes single factorial experiment design, multi-factorial experiment design, parameter design, incomplete block designs, regression design and response surface analysis, optimal design and etc.

主要内容有：单因子试验设计、多因子试验设计、参数设计、不完全区组设计、回归设计和响应曲面分析、最优设计等。

In the displacement measurement based on the principle of laser interference, the Gaussian quadrics fitting algorithm is used to fix the central position of facula and raise the location accuracy.

在基于两球面波干涉的长度和距离测量实验中，运用高斯二次曲面拟合算法为激光光斑的中心坐标定位，提高了光斑的定位精度。

Based on it, an optimization model is presented by fairing of the mesh.

在这一基础上，利用曲面光顺的网格能量法，给出了计算网格顶点的优化模型。

The abutting algorithm of false tooth geometrical model with bicubic B-spline curved surface and its anti-algorithm of characteristic network controlling vertex are described in detail.

本文详述了利用双三次B-spline曲面拼接义齿模型的算法及其特征网络控制顶点反算方法，并给出具体实验数据及处理结果。

According to the equation of asymptotic curves, a family of nonlinear asymptotic curves are given to the principal normal surface.

根据渐近曲线的方程，具体给出主法线曲面的一族非直线的渐近曲线。

A linear feasible direction algorithm is proposed to calculate reliability index of structure.

为克服当极限状态曲面方程非线性程度较高时应用一次二阶矩法求解可靠指标可能不收敛的问题，提出一种求解结构可靠指标的线性可行方向算法。

Applied in sculptured surface machining, a feasible tool direction computation procedure was provided based on constraint information.

应用于曲面加工问题，给出了根据约束信息计算可行刀具方向的具体方法。

To improve the imaging quality of CCD camera and make the lens small in size,compact in structure,the wide field of view optical lens with the standard quadric surface and even aspheric surface was designed.

为提高CCD摄像机的成像质量，同时使镜头结构紧凑、小型化，在大视场光学镜头的设计中，引入标准二次曲面和偶次非球面。

Advanced geometric disposal techniques for composite triangular Bezier surface, such as intersection, trimming and filleting, are studied for the needs of RP and RE .

本文针对RP技术和反求工程的需要，研究了复合三角Bezier曲面的高级几何处理技术，其中主要研究内容包括如下几点： 1。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。