英汉例句

• the acquired 3-d points cloud data are processed for smoothing, reduction, extracting of feature lines, segmentation, free form surface modeling etc to achieve reconstruction of the crowns.

  将获得的三维点云数据进行处理，包括数据平滑、数据精简、特征提取、数据分割、自由曲面建模等实现牙冠的三维重构；

• on the basis of a thoroughgoing study of the above methods, a non contact method for measuring free form surface automatically is given, and some key techniques are also described.

  在深入研究上述方法的基础上，提出了一种自由曲面的非接触自动测量方法，介绍了测量系统的构成、曲面边缘的提取、自动扫描方式的规划以及测头跟蹤方式等设计要点。

• by now free form surface modeling is an important research branch of cad/cagd, it is also the foundation of cam technology.

  自由曲面造型是当前cad／cagd的一个重要研究方向，也是cam技术的基础。

• cmm free form surface measuringbased on cad technique is the key to solve the above bottleneck.

  基于cad的三坐标测量机（cmm）自由曲面检测技术是解决上述问题的关键。

• a laser non contact surface sensor for measuring 3d free form surface is proposed.

  提出一种用于空间自由曲面测量的激光非接触曲面面形传感器。

• the first one is to reconstruct a superior hmd optical system with helmet visor and free form surface (ffs) prism.

  一种是用头盔护目镜和ffs棱镜重新构造hmd光学系统；

• traditionally, contact measurement or simple non contact measurement based on coordinate measuring machine are used for the measurement of free form surface with high accuracy.

  精确测量空间自由曲面的传统方法是采用三坐标测量机的接触测量或简单的非接触测量，这些测量方法存在工作效率低、自动化程度低等缺点。

• free form surface is most important feature to shape of product such as plane, automobile, motorcycle.

  自由曲面是工业产品，尤其是飞机、汽车、摩托车等行业产品外形的重要特征。

• tool positioning strategy for free form surface flank grinding with drum wheel was studied.

  对采用鼓形砂轮周磨自由曲面的刀位计算进行了研究。

• on the basis of the differential geometry, the geometrical theory of machining free form surface by cylindrical cutter in 5-axis nc machine tool is investigated.

  从微分几何学的角度，探讨了在五坐标数控机床上采用圆柱形刀具线接触加工自由曲面的几何学原理，分析了刀具面与被加工曲面二阶密切的条件。

• with the flexible spatial layout and the degree of design freedom of the free form surface (ffs), the structure of the optical system was simplified and the quality of the image was improved.

  由于自由曲面灵活的空间布局和设计自由度，使光学系统的结构得到了简化，像质得到了提高。

• physics based modeling is one of the keen free form surface modeling method at present, and it should be a practical surface modeling method in the future.

  基于物理的造型方法是当今曲面造型研究的热点之一，并可望成为今后曲面造型的实用工具。

• the small measuring field of sensor unit is the key problem in the free form surface measurement of large scale objects.

  本文针对大型物体自由曲面测量中，传感器单元测量区域小等问题，提出了一种基于粘性目标实现空间图像拼接的方法。

• marine propeller is a type of free form surface part. its design and manufacture precision decide ship's thrust efficiency directly.

  船用螺旋桨是一类典型的自由曲面零件，它的设计和制造精度直接决定了其推进效率。

• the aim of this dissertation is to perform complex free form surface modeling by choosing appropriate methods, then it can satisfy the requirements of numerical control machining.

  本文的出发点是通过选用适合方法对复杂自由曲面进行造型，满足曲面数控加工的需要。

• on the basis of a thoroughgoing study of the above methods, a non contact method for measuring free form surface automatically is given, some key techniques are also described.

  在深入研究上述方法的基础上，提出了一种自由曲面的非接触自动测量方法，介绍了测量系统的构成、曲面边缘的提取、自动扫描方式的规划以及测头跟蹤方式等设计要点。