三维空间

A method of producing a three-dimensional image of an object by recording on a photographic plate or film the pattern of interference formed by a split laser beam and then illuminating the pattern either with a laser or with ordinary light.

全息照像术一种再现物体三维空间形象的方法，在底片或版片上记录由分裂的激光光束干扰下的图案，然后再用普通光或感激光显示出该图案

This is my last OpenGL for a project to use the "three-dimensional vector space / point" and related functions, they can use a definition of space vector / points, for the vector translation, zooming and rotation, the use of correlation function can also achieve two vector by the fork, get a Vectors absolute length of a vector unit, received a 3:00 decision vector perpendicular to the plane, a space to be the distance between two points, two vector to be the plot points, to be the angle between two vectors, such as operating for the use of user-friendly, each function is detailed Notes, it is particularly important if the calculation vector plot points, fork also took note, we hope to have useful.

这是我过去进行一个OpenGL项目时使用到的"三维空间向量/点"类及相关函数，使用它们可以定义一个空间向量/点，实现向量的平移，缩放和旋转等，使用相关函数还可以实现两向量的叉乘，得到一个向量的绝对长度，将一个向量单位化，得到一个三点决定的平面的垂直向量，得到空间中两点的距离，得到两向量的点积，得到两向量的夹角等操作，为方便用户的使用，每个函数都有详细的注释，特别重要的向量计算如点积，叉乘还有相关说明，希望对大家有所用处。

ABSTRACT: The 3D space information in the 3D color scanner is obtained form the 2D image list.

三维激光彩色扫描仪中的三维空间信息是从二维图象序列中得到的。

This paper offers a numerical method for the optimal design of active noise cancellationinthree dimensional space based on the theory of radiation of noise sources and the additivity of linear soundfield.

本文根据声源辐射理论和线性声场迭加原理，提出了一种三维空间有源消声的数值优化方法。

And the six-component force sensor system designed for the compound test on the aerodynamic force and inertia force is developed in this paper. The main work is as follows.

六分力传感器能同时检测到三维空间的全力信息，是随着机器人技术的发展而出现的一种新传感器。

Because the numerical simulation method neglects the dynamical change of penetrability and stress field during metallogenic process, it is devoid of the similitude to the reality and failed to deal with the problem too. Although the analogue experiment can simulate the transportation process of polyphase fluid in the 2D dynamical structural frame, it cant carry out the 3D experiment because of the limitation of the experimental conditions.

而定量模拟难以把握成矿期介质渗透率及成矿应力场的动态变化，使其与实际地质对象在物理性质上具有一定差距物理实验虽能处理二维动态构造形变场中流体输运问题，但由于实验条件的限制，难以处理三维空间内流体运移问题。

Methods: A 3-D coordinate system was designed for skull, based on Frankfurt horizontal plane and analytical geometry method.

以颅骨的耳眼平面为基础定位平面，按解析几何方法设计颅骨的三维空间坐标系。

Key words: anthropotomy; craniometry; 3-D craniophor; three-dimensional coordinate system of the skull; surgery; imaging diagnosis; anthropology

关键 词：人体解剖学；颅骨测量法；三坐标定颅器；颅骨三维空间坐标系；手术；影像诊断；人类学

The term z-map might be a little misleading to those who are not familiar to working in 3D space. In high school geometry class the concept of two-dimensional space: the x-axis represents horizontal space and the y-axis represents vertical space. Whenever you work in packages such as Painter, Photoshop, Commotion, Combustion or After Effects you are working solely in 2-dimensional space. When you work in 3D you have, in addition to the x- and y-axes, a z-axis, representing depth.

z-map这个称呼或许对那些不从事三维空间工作的人来说有一点误导的嫌疑，在高校的几何课里面，关于二维空间的概念，X轴代表着横向空间，而Y轴代表着纵向空间，无论何时你使用例如Painter， Photoshop， Commotion， Combustion 或After Effects这样的软件，你正工作在一个二维的空间，但是在三维空间工作时，除了X轴和Y周，你还要加上Z轴，它代表了深度的概念。

By taking the strategy of uniting geometry with algebra and using the method of minimal value, the relationships of intersection, parallels and perpendicular between two three dimensional spaces in four-dimensional descriptive geometry are investigated and the calculation formula of the distance between two three-dimensional spaces are given.

用形数结合的观点和条件极值法，研究了四维空间的两三维空间的相交、平行和垂直的相互关系计算出两平行三维空间的距离。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。