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An artificial method of constrained coassembling process plan based on VRML model includes setting slide – rotary connection constraint; selecting artificial assembling body model; confirming constraint type of each component to its front or back end component in open or closed loop mechanism; calculating translation and rotary matrix of each component in moving course and its position parameter; generating time – order – path matrix and key frame as per time section; writing each key frame in reverse mode into interpolator of each component VRMC model; adding route in sequence between time and position sensors, position sensor and component form node for generating artificial picture.

本发明属于CAD协同产品设计技术领域，其特征在于：在网络环境下，设计者依托装在节点机上的三维VRML模型，以设计者与设计场景交互方式按照以下步骤实现有约束协同装配工艺规划：设定滑动转动联接约束；选定仿真装配体模型；确定开环或闭环机构中各零部件与它的前端和后端部件的约束类型；计算各零部件在运动过程中的平移和转动矩阵，再根据相应的约束计算运动过程中各零部件的位置参数；再据此生成零部件的时间-顺序-路径矩阵，按时间段形成关键帧；把各关键帧分别以逆序写入VRML各部件模型的插补器，依次在时间传感器和位置传感器之间、位置传感器和零部件造型节点间加入路由，生成仿真画面。

The simulation and the experiment results demonstrated the precision of cross path integration techniques,Fourier transform integration and area wave-front reconstruction method.

通过计算机模拟和波面实际测量，对十字路径积分法、傅里叶变换积分法和区域波前重构法三种主要算法的重建精度进行了对比研究。

The patriotic United Front is an important part of the theory and practice of the socialism with Chinese characteristics.

爱国统一战线是中国特色社会主义理论和实践的重要组成部分。

Presently, with does not love the focal point which patriotically into the people discussed that goes patriotically with any way, is also the topic which discussed for a while, when the disaster arrives quietly, to be how patriotic, already really suspended at people's front.

当前，爱国与不爱成为人们议论的焦点，用什么方式去爱国，也是一时议论的话题，当灾难悄悄降临的时候，怎样爱国，已经真真实实地摆在人们的面前。

The patrolman pulled his car in front of the Prius as a precaution.

为小心起见，那位巡警将自己的车停在了这辆肇事车前面。

Two-time FIFA World Cup winner Ronaldo scored twice as Corinthians beat rivals Santos 3-1 in front of a frustrated Pele in the first leg of the Paulista championship final.

两届FIFA世界杯冠军得主罗纳尔多在失望的贝利面前梅开二度，帮助科林蒂安在州锦标赛决赛第一回合中以3：1击败桑托斯。

Now in front of us is a two-story wooden pavilion.

现在在我们面前的是一个两层的木制阁楼。

The little girl is coming back from putting flowers in front of the statue, to pay respect.

这个小女孩，在金日成的塑像前放上了一些花并表达敬意之后，静静的离开。。。

So they'll send you 12 of them, you pay me up front 12 dollars.

所以，他们将寄送给你12本，而你预付我12美元。

In front of a peacekeeping FDTD given on the basis of two-dimensional FDTD procedures.

在前面1维FDTD的基础上给出了2维的FDTD程序。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。