因此，可以通过密度求一个平面物体的质量。
一个平面物体的密度是每单位面积元的质量。
The density for a flat object would be the mass per unit area.
其中一个最好的例子是平面和非平面物体之间的差异；
One prime example is the distinction between flat and non-flat objects;
文中介绍了利用面阵CCD测量不规则平面物体面积的原理和方法。
A simple method for area measurement of irregular plane object using area array CCD was presented.
源程序用BASIC语言设计，可用于解决平面物体系统的静力分析问题。
Using the source program designed by BASIC, the static analysis of coplanar body system can be made.
利用面阵CCD测量不规则平面物体面积时，图像畸变对测量精度影响很大。
In the area measurement of an object with irregular plane using area array CCD, the precision is greatly influenced by image distortion.
您可以在空气中开始自由形式的图纸或画在表面上创造堆叠和连接平面物体。
You can start free-form drawing in the air or draw on surfaces to create flat objects for stacking and connecting.
从另一个角度看，一个平面物体的重心就是,如果在重心处拿起物体，它就能完全地保持平衡。
The other way to think about it, if I had a flat object then the center of mass would basically be the point where I would need to hold it so it is perfectly balanced.
对称性检测不仅对定位和识别平面物体有重要作用，而且在3d物体的重建中也越来越重要。
Symmetry detection plays an important role not only in locating and identifying objects, but also in the reconstruction of 3d objects.
盖茨还展示了该公司的平面电脑，一台茶几外型的电脑可以像一个大型的触摸屏电脑那样工作，并能对放置其上的物体进行回应。
Gates also displayed the company's Surface computer, a coffee table shaped PC that works like a large touch-screen PC and can respond to objects placed on top of it.
据英国《每日邮报》10月20日报道，微软公司的研究人员已经开发出下一代Kinect动作传感器。该设备能把任何物体平面转变成触摸屏。
Microsoft researchers have developed the next generation of the Kinect motion sensor - a device which turns any flat surface into a touchscreen.
平面镜中所看到的物体与实际物体是左右颠倒的。
An object as viewed in a plain mirror is perverted from its actual appearance.
当我们把一个物体，放到引力场中，我们会得到在一个平面上的轨迹。
When we throw up an object in a gravitational field, you have the trajectory in a plane.
反射对称就是一种镜子效映，一个物体在平面内反射后得到另一个自已。
It is the "mirror" effect, or when one object is reflected across a plane to create another instance of itself.
红外照相机聚焦的是一根手指(或者相似大小的物体)破坏水平面、散射光线的点。
An infrared camera watches for spots where a finger (or similarly sized object) breaks the plane and scatters the light.
可能是由于视觉系统进化，使得我们对些微高于水平面的物体过度敏感，以此帮助我们挺直腰杆。
Perhaps it's because our visual system evolved to be overly sensitive to even slight departures from the horizontal, to help keep us upright.
特别地，绕平面上一点旋转物体，同样可以想象，旋转一个实体。
In particular, we have been rotating things about just a point in the plane What you could imagine also is instead you have your solid.
“我们还需要从立体效果图中计算出物体的实际距离，”Stollnitz说，“然后比较这些物体如何出现在不同的平面照中。”
"We also have to calculate the actual depth of objects from the stereo effect," says Stollnitz, "comparing how they appear in different photos."
轮廓，平面图概略在透视的图表中，与被描述的观察者和物体之间的视觉线垂直的虚构位面之一。
In perspective rendering one of several imaginary planes perpendicular to the line of vision between the viewer and the object being depicted.
这样做的用意是将你的图像序列上的地平面定向出场景的地平面，并且放置三维物体在上面。
By that I mean orienting your scene so that the ground plane of the image sequence lines up with the ground plane you place your geometry on.
用缩放和转换工具来移动和物体，使其贴合地平面。
Use the scale and transform tools to move and position the objects to the ground plane.
该算法是基于平面定标物体上，且只需一个坐标系统。
The method is based on the plane calibration object and need only one coordinate system.
在一个平面上有一根棒或其它物体。
It has a stick or other object that rises above a flat surface.
一种光学装置，可将物体虚像投影到一平面之上，多用于跟踪。
An optical device that projects a virtual image of an object onto a plane surface, especially for tracing.
象的空间位置和光场振幅的变化与透镜系统的焦距以及物体距焦平面的位置有关。
The position of the image and the amplitude variation in the optical field are associated with the focus and the distance from the object to the front focal plane of the lens system.
轮廓，平面图概略：在透视的图表中，与被描述的观察者和物体之间的视觉线垂直的虚构位面之一。
In perspective rendering, one of several imaginary planes perpendicular to the line of vision between the viewer and the object being depicted.
探讨利用计算机视觉系统对目标物体平面图形面积和面积惯性矩的测量方法。
A method for measurement of area and moment of inertia of plane figures grabbed by computer vision system is presented in this paper.
探讨利用计算机视觉系统对目标物体平面图形面积和面积惯性矩的测量方法。
A method for measurement of area and moment of inertia of plane figures grabbed by computer vision system is presented in this paper.
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