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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。

Mainly in solo jazz improvisation and the development of itself, with more and more attention, and increasing the performance of brass instruments and the solo in arranger exploration indicates the arrival of the era of swing.

以独奏为主的即兴演奏也随爵士乐本身的发展而受到越来越多的重视，日益增多的演奏铜管乐器的独奏者以及在编曲方面的探索预示了摇摆乐时代的到来。

He tells us his first task is to develop instruments to measure the exact amount of arsenic in the water.

他告诉我们他的首要工作是开发用来测量水中砷的精确含量的仪器。

He tells us that his first task was to develop instruments to measure the exact amounts of arsenic in the water.

他告诉我们说他的第一个目标是发明一种能够整齐测量水中的砷的含量的仪器。

Actually, go up in the hairdressing bed that is without asepsis environment, with non-standard medical apparatus and instruments, undertake suction operation of fat, thin face to the client, this is not individual phenomenon.

其实，在毫无无菌环境的美容床上、用不规范的医疗器械，对顾客进行吸脂、瘦脸手术，这并不是个别现象。

The standardised approach expands the range of eligible collateral beyond OECD sovereign issues to include most types of financial instruments, while setting out several approaches for assessing the degree of capital reduction based on the market risk of the collateral instrument.

在经合组织国家债券的基础上，标准法扩大了合格抵押品的范围，使其包括了绝大多数金融产品，并在考虑抵押工具市场风险的同时，规定了计算资本下调幅度的几种方法。

The global exposure relating to the use of financial derivative instruments shall not exceed the total net asset value of the Fund.

使用金融衍生工具有关的整体风险不得超过本基金的资产净值总额。

The Net Asset Value of the Fund may have a high volatility due to these instruments and techniques being included in its scheme property and may involve a greater degree of risk than is the case with conventional securities.

投资涉及风险。投资基金应被视为长线性质的投资，而且只适合了解所涉及之风险的投资者。投资於基金不应占投资组合重大比例。

Understand asset valuation and valuation of financial instruments.

介绍 中的各个营运部门及其间之协调作业与工作程。

Her job is as an assistant of the professor in the laboratory where she maintains the instruments and equipment.

她担任教授的助理工作，维护实验室的仪器设备。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。