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- At each interface the spreading wave front is made discontinuous. 在每一分界面上扩展的波前出现间断。
- A wave front intersection positioning method used for long-base line AUV navigation system is presented.The principles, numerical algorithm, solving equation are analyzed. 摘要本文提出在长基线自治水下机器人导航定位系统中用波阵面进行定位的方法,即用射线理论求出波阵面,用波阵面相交求出目标位置。
- It starts with zero and grows to a maximum slightly behind the wave front. 它从零值开始,并在稍后于波阵面处增长到最大值。
- In this paper, the method of real time processing for high sampling frequency Shack-Hartmann wave frontsensor was discussed. As an example, the results for 2900 Hi Shack-Hartmann wave front sensor was given. 结合61单元自适应光学系统中采样频率为2900Hz的Shack-Hartmann波前传感器的特点,讨论了采用高帧频Shack-Hartmann探测的自适应光学系统的实时波前处理方法。
- It presents an algorithm for the finite element mesh generation based on quadtree and advancing front method. 摘要提出了一种基于四叉树法和波前法的有限元网格生成算法。
- How to mesh final polyhedron hulls in advancing front method is an inevitable problem in automatic mesh generation for three dimensional domains. 在利用推进波前法实现三维网格自动生成中 ,在网格生成最后阶段 ,不可避免地遇到波前三角平面找不到相应顶点 ,而导致不能生成新单元的困难。
- The radii are proportional to the time which has elapsed since the wave front occupied the position wi. 半径与波前占据wi位置以来能经过的时间成正比。
- This assumption is reasonably justified in the early stages, when the wave front is not far from ground zero. 这种假定在初期阶段波阵面离地面零点不远时是相当合理的。
- Decomposition of Sch*inhardt polyhedrons is a bottleneck problem in automatic mesh generation based on advancing front method for three-dimensional domains. 基于推进波前法实现三维有限元网格自动生成中 ;在网格生成的最后阶段 ;不可避免地遇到Sch nhardt类型多面体 ;波前三角平面找不到相应顶点 ;从而导致有限元网格自动生成的失败 .
- If a refraction or a reflecting body is irreqular, the wave front undergoes a deformation. 如果折射体或反射体是不规则的,波前即产生变形。
- In this paper, an automatic hexahedron mesh generation method based on the advancing front method is described for the multi-medium 3D complicated domain. 使用自适应有限单元法在三维复杂域内求解水工及岩土工程问题,讨论了应用行波法在多介质三维复杂块体内六面体单元网格的自动生成过程。
- Successive wave fronts in this case form a series of concentric spheres. 相继波前形成了一系列的同心球面。
- The planes of the wave front and the reflecting surface are also normal to the plane of the figure. 波阵面的诸平面与反射面都与图面垂直。
- If a refraction or a reflecting body is irregular, the wave front undergoes a deformation. 如果折射体或反射体是不规则的,波前即产生变形。
- When the incident wave front reaches this point, the reflected wave is still some distance away. 当入射冲击波波阵面到达这一点,反射波离开它还有一段距离。
- High-pressure acting on samples were produced by shock wave front converging in metallic ball. 在该装置上 ,利用冲击波由金属球体表面向中心汇聚形成的高压 ,对样品进行了冲击处理 ;
- All elements are radiating in phase, and the resultant wave front is perpendicular to the axis of the element array. 所有单元发射相位一致,合成的波前垂直于单元阵列轴线。
- Such wave fronts are seperated from one another by one-half wavelength. 这种波阵面彼此间隔半个波长。
- Radiation from air shock wave front produced by explosion is an excellent microsecond illuminant. 炸药爆炸产生的空气冲击波阵面的辐射是高速摄影中的一种良好的微秒级持续时间的照明光源。
- Such wave fronts are separated from one another by one-half wavelength. 这种波阵面彼此间隔半个波长。