虚拟力

When contacting with the virtual object, the contact force can be calculated and shown in the graphic interface.

此系统中，操作者通过主手控制虚拟环境中的从手与虚拟物体相作用，虚拟环境中的接触情况如碰撞响应、形变在图形界面仿真，虚拟力通过主手装置表达。

D: It's no myth, though it is what physicists call a " fictitious force."

尽管这是物理学家们所谓的"虚拟力"，但这不是一个迷。

Though it is what physic ists call a " fictitious force".

但，它就是物理学家们所说的"虚拟力"。

The relationship between fictitious equilibrium force and factor of safety is complex in the initial steps during the iterative procedure.

分析了虚拟平衡力与边坡安全系数间的变化规律，研究了通过迭代求解非线性方程确定在虚拟平衡力趋于零时边坡安全系数的基本原理。

It's no myth, though it is what physicists call a "fictitious force." If you tie a rock to a string and spin it around, it feels as though some force is trying to drive the rock away from the center of the spin.

不是呀，物理学家称这种力量为"虚拟力"，如果你用绳子绑住一块石头然后旋转它，你就会感到有种力量试图使石头远离旋转中心。

Secondly, the paper is expanded from follow three aspects: the virtual design, the virtual process and the product data managementduring the developing the torque converter. Applying the key technique of concurrent engineering---design for function, design for assemblyand design for manufactureof the method of design for "X", the virtual design of the torque converter is accomplished in CATIA V5. Then the model constitution and the simulation of virtual process of the torque converter is done in CATIA V5, including the model constitution and the simulation of 5-aixe NC virtual process of the vane, the model constitution（material:PVC） of the idler pulley rapid prototypingand the virtual assembly and the motion simulation of the torque converter, etc. 3-D data exchange between various CAD systems is realized by using STEP standard. The lever of classing the character model of the torque converter is given. And the access authorization is set up and given to manage the partners' reading/writing the product data.

应用并行工程的关键技术之一——面向产品全生命周期的设计DFX中面向功能的设计DFF、面向装配的设计DFA和面向制造的设计DFM的方法，在CATIA V5中完成液力变矩器虚拟设计；在CATIA V5中对液力变矩器进行虚拟加工建模和仿真，包括液力变矩器导轮叶片五轴数控加工刀轨建模与仿真、导轮快速成型RP建模、液力变矩器虚拟装配和运动仿真等；采用STEP标准实现多CAD系统之间三维数据交换，提出液力变矩器特征模型的分级标准并对三维模型数据进行分级管理，制定相应的权限等级以规范合作厂家的产品数据管理层次。

Using virtual finger's position steading of real distance and extrapolation based on real material are also suggested in the system.

在系统中提出以虚拟手指空间位姿代替实际力作用线方向上位移的计算和基于实际材料的虚拟力外推的方法。

In this system, the operator manipulates an object in a virtual environment by using the 5-DOF master arm.

介绍了基于5自由度力觉再现装置的虚拟力觉仿真系统的实现方法。

Dimentional image drawing computation Users operate the Sensable device in simulating surgery, the device transmit the position (the 3-dimension coordinate) to workstation to compute the collision detection. The workstation compute the outside force, distortion, feedback force out of collision detection and the physics model.

三维图形绘制计算用户操作Sensable力反馈设备进行虚拟手术操作，力反馈设备将器械位置传送给高性能图形工作站进行碰撞检测计算；高性能图形工作站根据碰撞检测信息和物理模型进行外力计算、变形计算、反馈力计算，最后根据几何模型进行图形绘制计算，将三维虚拟器官视景显示在屏幕上；图形工作站将解得的反馈力传送给力反馈设备产生反馈力。

D: It's no myth, though it is what physicists call a " fictitious force."

尽管这是物理学家们所谓的&虚拟力&，但这不是一个迷。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了