First, through the Fourier expansion, the expansion of the function u ∈ H 3 ( e) was obtained. Then, the three-dimensional interpolation operator of projection type was introduced. Finally, an equivalent construction method of this operator was given.

At the same time, it obtaines the three-dimensional spectrum and its projection, using microphone array technology for the car noise source identification test to find the main noise source.

同时利用传声器阵列技术对该轿车进行噪声源识别试验，得出了其三维空间谱及三维空间谱的投影图，从而找出了主要噪声源。

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In the actual production and living in the real world image as a three-dimensional scene in two-dimensional projection plane, this process would lose a lot of information.

反在实际的生收生涯外，图像做为实实世界外三维场景反在两维平里的投影，那个入程会害得大量的信做。

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Three-dimensional Interpolation Operator of Projection Type and Its Equivalent Construction Method

三维投影型插值算子及其等价构作方法

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On this basis, this study obtained three-dimensional perspective projection relationship and find the the optimal projection relationship of view point, the screen and the object.

以此为基础，本研究得出了三维的透视投影关系，并且找出了视点、屏幕与实物间的最佳投影关系。

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Rendering the Three-Dimensional Perspective Projection View of Object Using OpenGL LANDSCAPE

利用OpenGL生成物体的三维透视景观图

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SIFT features has a favorable invariance for the image scaling, translation and rotation. It also has certain robustness to illumination changes, affine transformation or three-dimensional projection.

SIFT特征对于图像缩放、平移和旋转都具有良好的不变性，对于光照变化和仿射变换或三维投影也具有一定的鲁棒性。

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In this paper, the periphery of projection of a molecule is described based on three-dimensional projection, and the new invariable was used for quantitative structure-activity relationship studies.

在三维投影的基础上，对投影的边缘进行了描述，并以其进行了定量结构活性相关研究。

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In this paper the three-dimensional convection-diffusion problem is reduced to a manageable two-dimensional problem, equivalent to only consider the flat direction of the convection-diffusion without considering the vertical movement of material deposition.

本文把三维对流扩散问题简化为比较容易处理的二维问题，相当于只考虑平面方向的对流扩散运动而不考虑垂直方向的物质沉降。

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The application of the method of fundamental solutions is considered for the numerical solution to a three-dimensional inverse problem in linear elasticity, i. e., the Cauchy problem associated with the Navier system.

将用于求解椭圆型偏微分方程边值问题的基本解方法应用于求解一个三维线弹性反问题，即Navier方程组的Cauchy问题。

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For the modeling and solving convenience, we introduce five basic assumptions, so the three-dimensional unsteady problem is simplified into one-dimensional stationary problem.

为建模及后续求解的方便，本文引入了五个基本假设，将三维非定常问题转化为一维定常问题。

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An optimal design method, based on genetic algorithm and three-dimensional inverse problem design method, has been used to improve the design of a Kaplan turbine.

本文提出了一种结合全三维反问题计算与遗传算法优化的轴流式水轮机转轮设计方法。

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Based on the principle of composite element method, a new algorithm for the three-dimensional seepage problem in discontinuous rock masses is presented.

基于复合单元法的原理，提出了不连续岩体三维渗流的新算法。

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Exact Solution for Three-Dimensional Three-Object Problem with Harmonic Interactions

受谐相互作用的三维三体问题的精确解

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The high-speed movement of the hydrodynamic drag device in free surface is a highly complex three-dimensional flow problem.

水力增阻器高速冲到水中并在自由面上运行是一个高度复杂的三维流动问题。

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Air route planning is a three-dimensional planning problem, with wide range, many objects and many constraints.

飞行航路规划是一个大范围多目标多约束的三维规划问题。

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A hybrid boundary element method in three-dimensional thermoelastic problem

三维热弹性力学问题的混合边界元法

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Notes on Theoretical Analysis of the Second-Order Wave Forces in Three-Dimensional Diffraction Problem

三维问题中二阶波浪力理论计算的注记

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A Hybrid Simulated Annealing Algorithm for the Three-Dimensional Packing Problem

求解三维装箱问题的混合模拟退火算法

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The new research and development of three-dimensional inverse problem of runners of hydraulic machinery

水力机械转轮三维反问题研究及其新进展

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Three-dimensional Loading problem is a kind of typical NP-complete problem.

三维装箱问题是一类典型的NP-complete问题。

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