So if we want to talk about the volume of that, we just talk about the surface area, which is 4 pi r squared, and we multiply that by the thickness d r.
如果我们要讨论它的体积，我们要用的是表面面积，也就是4πr的平方，乘以厚度dr
Well, for example,if our surface is a plane, a slanted plane given by some equation, ax by cz = d.
比如说，假如我们的曲面是一个平面，由公式ax+by+cz=d给出的，一个倾斜的平面。
In 3-d graphics parlance, a texture is an image applied to a design area like wallpaper pattern: the image is repeated or cut as needed to cover the surface.
在3 - d图形用语中，纹理是指像墙纸模式一样应用到某个设计区域的图像：该图像可以重复，也可以根据需要裁剪，以覆盖平面。
The second part of a spatial reference system is its projection, which defines how to lay out the Earth surface onto a 2-d surface.
空间引用系统的第二部分是投影，它定义了如何将地球表面放置在2 - d平面上。
The process of forming a 3-D figure from a 2-D surface is called extrusion.
从 2-D 平面形成3-D图形的过程称作挤压。
D measurement of free surface, one of key technology of Reverse Engineering, is described in this paper.
本文研究了逆向工程的关键技术之一——自由曲面的三维测量技术。
By analyzing the way each line rises and falls, the software builds a 3-d model of the surface of the finger in less than a second, with each ridge and valley in its proper place.
通过分析每个条纹升降的方式，系统软件在不到一秒的时间里就可构造出手指表面的三维模型，保证每个峰谷都处在各自合适的位置上。
Now, thanks to a new collaboration with NASA, WorldWide Telescope has produced the most detailed spherical image of the heavens to date, along with a new 3-D, true color map of the surface of Mars.
现在，由于与美国航空航天局（NASA）的一项新合作，微软世界望远镜做出了迄今为止最详细的宇宙球面图，还有新的火星表面3D真彩地图。
Fire up those 3-d SDL libraries, map the drawing surface onto a plane, and you can have full-motion video as an aspect of your 3-d world.
利用那些3dsdl库，可以将绘制表面映射到一个平面，并让运动视频成为3d环境中的一个面。
The Naval Sea Systems Command, Naval Surface Warfare Center, Dahlgren Division, Dahlgren, Va. is the contracting authority (contract Number N00178-08-D-5394).
美国海军海上系统司令部的海上水面作战中心Dahlgren分部为主要合同授权机构(合同号n 00 178-08 - D - 5394)。
After downloading the results, the 3-D renderings appear as a wire-frame model of the captured scene with realistic surface color and texture.
三维图就像在3D线框模型上蒙上一层“皮”，皮的材质颜色与真实场景一样。
The measuring methods of D C TIG welding arc anode sheet surface current density split sheet method and probe (made by ourselves) method were analysed and compared.
对直流TIG电弧阳极板表面电流密度的测量方法——分离极板法和探针（自制）法进行了分析比较。
A brief history of R/D for glass flake was described, empharized on thickness and surface treatment.
叙述了我国玻璃鳞片的研究和开发历程，提出了厚度和表面处理的重要性。
The ratio of energy dissipation WJ/WI increases nonlinearly with increment of fractal dimension D of the jointed surface.
节理岩石的能量耗散比WJ/WI随节理面分维值D增大而增加，两者呈非线性关系；
POC(D)(detrital POC) is a major composition of total POC in surface water of Xiamen coastal area.
碎屑POC为厦门近岸海域表层海水POC的主要组成部分。
And it's not just to share sea surface temperature data with fellow Ph. D. s, but also to try to educate the public.
这不仅仅是和那些博士们分享海洋表面温度，而且还是要教育公众。
Depth of cut, d, is the normal distance between the unmachined surface and the machined surface.
切削深度d是未加工面与已加工面之间的垂直距离。
The surface image of substance was studied with the method of fractal geometry. Calculated the information dimension(D I)of images, which have different distributing features.
应用分形几何的方法，研究了物质表面图像上粒子的分布特点，计算出粒子疏密分布不同的表面图像的信息维。
On a process of identifying the sea surface target by using D-S evidence theory, the method of how to determine basic probability assignment (BPA) by measured data of sensor is studied.
在应用D S证据理论识别海面目标的过程中，重点研究了如何通过传感器数据实测值来确定基本概率分配函数（BPA）的方法。
The surfaces of diffraction optical element (DOE) are often deep and discontinuous, which lead to some difficulties for measurement of the 3-d surface topography of DOE.
衍射光学元件(DOE)表面形貌的测量需要解决因表面结构深度较大和表面不连续给测量带来的困难。
The technological process of surface modification of micro-crystal muscovite by aluminate coupling agent DL-411-D and evaluation method of modification effect were studied.
以微晶白云母为研究对象，铝酸酯DL-411-D为改性剂，研究探讨微晶白云母铝酸酯表面改性工艺条件及其表征方法。
Using the moment method, the antenna and surface currents of aircraft are calculated. Finally, the radiation pattern of a D-type-no-man aircraft is induced.
用矩量法计算了飞机天线及其机身表面的电流分布，推导了飞机天线的辐射方向图。
Light Sectioning Method(LSM) is a new kind of the 3 D surface electric lighted nontouching measurement. There are two main steps:obtaining information of the curve surface of object by CCD;
光切法是一种新型的三维表面轮廓的光电非接触测量方法，它主要有两个步骤：用CCD获取物体表面的轮廓信息；
Therefore the author built a 3-d model based on the surface equations of roller gear CAM, and presented a method of using coordinate measuring machine (CMM) to measure the surfaces of the CAM.
为此，本文以弧面分度凸轮的轮廓面方程为基础，建立了弧面分度凸轮的三维模型，提出了一种用三坐标测量机测量其轮廓面误差的方法。
This method is highly important for us to develop further exploring research on 3-d surface depth reconstruction and recovery of scene structure.
这一方法对进一步开发3 - D表面深度重建及复原景物结构探索性研究有着十分重要的意义。
Obviously, this research mainly focused on the scope of locomotive 3-d surface modeling.
显然，这项研究的范围主要集中在列车三维表面建模上。
Obviously, this research mainly focused on the scope of locomotive 3-d surface modeling.
显然，这项研究的范围主要集中在列车三维表面建模上。
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