三面形的

However, the conventional matching method is rather inefficient to measure continuous and characterless surface, which may lead to severe matching mistakes.

传统的立体匹配中，平坦、缺乏纹理细节的三维面形的误匹配率较高。

The company has advanced mechanical equipment and strong technical force, capable of producing: 8-300mm range of straight profile, meta curved, staggered tooth shape, the overall level of tooth carbide saw blade milling cutter, cutter blade on three sides, convex semi-circular cutter, concave semicircle cutter, angle cutter, Slitter knives.

公司拥有先进的机械设备及雄厚的技术力量，能够生产：Φ8-300mm各种直齿形、元弧形、交错齿形、高低齿形整体硬质合金锯片铣刀、三面刃铣刀、凸半圆铣刀、凹半圆铣刀、角度铣刀、分条刀等。

The control principle of electrostatic shaping was introduced according to the balance between electrostatic force and resulting force formed by membrane deformation and the complex shaping process of SMEC. Then, taking the trisection circularity electrode for an example, the distribution characteristic of electric potential in the electrostatic field was analyzed, namely, the expression of potential function in the electrostatic field was deduced by Laplacian equation. And then, by combining the difference equation with electric potential expression, the numerical solutions of electrostatic force in single electrode mode and trisection circularity electrode mode were disposed. Finally, the calculated figure was compared with the ideal paraboloid and comparison shows that more accuracy would be achieved by multi-electrode control.

根据静电力与薄膜变形载荷作用力之间的平衡关系和静电拉伸薄膜反射镜成形的复杂过程，介绍了薄膜反射镜静电成形的控制原理；以三等分环状电极为例，分析了静电场中空间电势分布特性，即从拉普拉斯方程推导出静态场势函数的表达式；然后，利用差分与电势方程结合的方法，对单电极电场力和三等分环状电极电场力进行了数值求解；最后，将计算面形与理想抛物面进行了比较，结果显示，单电极情况下得到的薄膜反射镜面形不是理想抛物面，若采用多电极控制可获得更高的控制精度。

The control principle of electrostatic shaping was introduced according to the balance between electrostatic force and resulting force formed by membrane deformation and the complex shaping process of SMEC. Then, taking the trisection circularity electrode for an example, the distribution characteristic of electric potential in the electrostatic field was analyzed, namely, the expression of potential function in the electrostatic field was deduced by Laplacian equation. And then, by combining the difference equation with electric potential expression, the numerical solutions of electrostatic force in single electrode mode and trisection circularity electrode mode were disposed.

根据静电力与薄膜变形载荷作用力之间的平衡关系和静电拉伸薄膜反射镜成形的复杂过程，介绍了薄膜反射镜静电成形的控制原理；以三等分环状电极为例，分析了静电场中空间电势分布特性，即从拉普拉斯方程推导出静态场势函数的表达式；然后，利用差分与电势方程结合的方法，对单电极电场力和三等分环状电极电场力进行了数值求解；最后，将计算面形与理想抛物面进行了比较，结果显示，单电极情况下得到的薄膜反射镜面形不是理想抛物面，若采用多电极控制可获得更高的控制精度。

New method of three-dimensional coordinates calibration in phase measuring profilometry.

相位检测面形术在大尺度三维面形测量中的应用。

Ray tracing theory is used to obtain phase and universal polynomial function of grating,and the coefficient of the polynomial function is optimized by genetic algorithm.

该方法根据光线追迹原理设计获得光栅相位和面形多项式函数通式，采用遗传算法优化面形多项式函数系数，分别设计了分束比为1：2×2、1：3×3、1：4×4的光栅分束器件；其衍射效率分别为81.83%、81.11%和74.01%；三个器件的光强均匀性分别达到0.02394、0.1838和0.1912，并用Matlab进行了仿真。

Ray tracing theory is used to obtain phase and universal polynomial function of grating, and the coefficient of the polynomial function is optimized by genetic algorithm. Several grating splitters with ratio 1:2×2, 1:3×3, 1:4×4 and diffraction efficiency 81.83%, 81.11% and 74.01% respectively are designed based on the method.

该方法根据光线追迹原理设计获得光栅相位和面形多项式函数通式，采用遗传算法优化面形多项式函数系数，分别设计了分束比为1：2×2、1：3×3、1：4×4的光栅分束器件；其衍射效率分别为81.83%、81.11%和74.01%；三个器件的光强均匀性分别达到0.02394、0.1838和0.1912，并用Matlab进行了仿真。

In the even-odd method, according to the symmetry properties of odd and even functions, the function to describe the surface distribution of a flat is decomposed to four components: even-odd odd-even even-even and odd-odd functions, the absolute distribution of three flats are obtained by solving every component.

奇偶函数法根据函数的奇偶特性，将平面面形函数分解为：偶奇、奇偶、偶偶和奇奇函数，再分别求出各项，从而得到三个平面的绝对面形。

Stress shielding effect of the trihedral fix trough plate,trapezoid compression plate and Tianjin compression plate on the long bone measured with the electrical measuring method.

用电测法测量了三种股骨中段骨折内固定钢板（三面固定槽形板、梯形板、天津板）固定后对骨的应力遮挡效应。

Applicability: for different specifications of the main device labels: well-known brands use imported components, the unique advantages of stable and reliable: one can be affixed to many standard (up to 20) can be affixed to many objects, and pasted after automatic cartoning, be affixed to objects shape: round, cylindrical, oval, square, triangle, flat, convex, concave, polygonal, and back on three sides, such as the Customer Service ......

适用性：用于不同规格的标贴物主要器件：用进口知名品牌器件，稳定可靠独特优势：一次可贴多标（最多可20个）多物可同时贴，贴完后可自动装盒，被贴物形状：圆形、圆柱形、椭圆形、方形、三角形、平面、凸形、凹形、多角形、正反面、三面等

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。