重心

The system gets two image of one object with two CCD, thus obtains depth from two CCD"s parallax. After investigating the operation spot and discussing with surgeons we use LED as markers, and get the marker"s 3-D position with a non-contact optics orientation method. After calibrating the CCD, processing the image, the system can figure out marker"s areal coordinates, get marker"s 3-D coordinate in dummy world coordinate system, thereby obtain instruments 3-D position and orientation. After the coordinate transformation and a series of orientation calculation, operation navigation comes true.

运用两个摄像机对同一目标从不同位置成像，进而从视差中恢复距离；通过对手术现场的仔细了解与手术医师的反复商榷，使用LED作为标志点，利用非接触式光学定位方法提取空间点位置信息：通过对摄像机的标定、图像处理及目标点重心的计算，求出空间点在虚拟世界坐标系下的三维坐标，从而确定了手术器械等的空间位姿，通过空间坐标转换及一系列定位计算，完成了手术导航实验系统。

The main interest of our laboratory is on proteins with arginine side chain methylation and the subsequent cellular responses.

本实验室的研究重心主要在蛋白质精氨酸支链的甲基化及其后续之细胞反应。

In this period, the rural land problem contains land assignment problem and land use problem.

该时期，农村土地问题讨论的重心主要集中于"土地分配"和"土地利用"问题。

And in ancient times, this was the heart of Athenian life.

在古代，集会是雅典人的生活重心

In the long run, the "County -level" Administration Mechanism can't radically change the low-lying center of the rural compulsory education investment, and can't provide reliable institutional guarantee and auspice for rural compulsory education.

从长远来看，"以县为主"的教育投入管理体制并未从根本上改变农村义务教育投入重心过低问题，未能为农村义务教育发展提供可靠的制度性保障和支持。

Experimental results show that the proposed method is fast,stable and accurate,and the measuring accuracy of the modified CCD laser autocollimator is improved from 2 arcsec to ±0.25 arcsec in 0.23 s using the proposed method.

光电自准直仪中典型的激光CCD自准直仪因其较高的测量精度和稳定性得到了广泛的应用[6~10]，但其常用的定位方法，如重心定位法[7]、矩心内插法[8]等，均存在定位精度低、重复性差且计算速度慢的缺点。

These tests are performed with the axis of rotation passing through the CG to minimise measurement errors.

这些试验都需要轴转动通过重心，以最大程度地减小测量误差。

Move, hit your shot, and fall off bal ance to teach yourself balance on the move.

动起来击球，并且在失去重心的练习中学会掌握平衡。

Simultaneously, Barthes transfers attention to the readers. Chapter 4 analyses Bloom's intertextual theory.

同时，巴特又将研究重心偏向到了读者一边，并在其中融入了独特的文本享乐成分。

City is the barycenter of China' s sustainable development. The urbanization of China redounds to resolve the conflicts in front of sustainable development.

城市是中国可持续发展的重心，中国的城市化有助于解决现阶段可持续发展面临的诸多矛盾。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。