A 3D engineering geology modelling and analysis system is designed based on the complex data structure of boundary representation(Brep) and TIN,as well as the GIS technique.
采用边界表示(BRep)结构和TIN模型的混合数据结构,借助GIS技术,开发集基础数据管理和三维地质建模为一体的工程地质三维建模及分析系统。
In order to solve the problem for feature recognition in feature modeling field,a new technique called edge boundary classification(EBC) for recognition of features from boundary representation solid model is presented.
为解决特征造型领域的特征识别问题,提出一种边界分类方法,从边界表示的实体模型中识别特征。
At present, the CAD system always uses hybrid representations of feature representation and boundary representation in order to take advantages of both representations.
目前，在CAD系统中，一般采用特征表示和边界表示的混合表示方法，以充分利用两种表示法的优点。
The incremental transmission algorithm of B-rep-based changed primitives is presented in this paper, reduces the model data requiring to be transmitted as far as possible, and guarantee the real-ti.
基于边界表示的变动基元集的增量传输算法,极大地减小了数据的传输量,保证了协同模型的实时同步性。
The beautification theories and methods, focusing on the freeform models, are intensively explored to improve the shape of the final reverse B-rep model in this dissertation.
然后，给出了两张单节点B-样条曲面间G~1连续的充要条件以及公共边界曲线控制顶点的本征方程，并利用局部格式构造整体收敛的G~1光滑拼接的边界表示模型获得变形映射族的特解。
Pending a settlement, the status quo of the boundary should be maintained.
在达成协议之前，必须维持边界现状。
Protestant Christianity in Kansu-Tibetan Border: The Past and Present;
甘肃汉藏边界的基督教：历史与现状
The Status Quo of Collective Security Law and Its Boundary;
试论集体安全法的现状及其法律边界
The surrounding tissues and ducts were without the phenomenon of compression and destruction. Two cases of hepatic hemangioma(8% ) which acoustic images appeared as round and boundary were distinctness, and the inside low echo had got reticulation echo.
血管瘤2例(8％),声像图表现为圆形,边界清晰,低回声内有网状回声;
On Physical Fitness of Children Aged 3-6 in Minority Region of Hunan Hubei and Chongqing;
湘鄂渝边界地区汉族与少数民族3-6岁儿童体质现状研究
iterative fulfilment of boundary conditio
边界条件的迭代实现
Research on interaction model of free boundary shape on crack propagation
自由边界形状与近边界裂纹相互作用模型研究
In a precarious position.
边界状态处于不稳定的状态
Distance from the top edge of the canvas to the top of the shape
背景页面上边界和形状上边缘之间的距离
MULTIPLE BOUNDARY LAYER PHENOMENA OF SOLUTION OF BOUNDARY VALUE PROBLEM FOR THIRD ORDER DIFFERENTIAL EQUATION WITH BOUNDARY PERTURBATION;
伴有边界摄动的三阶微分方程边值问题解的多重边界层现象
The shape, outline, or boundary of a coast.
海岸线海岸的形状、轮廓或边界
Contains shapes that represent spaces, boundaries, and people.
包含代表空间、边界和人员的形状。
The Dialect in the Eastern Boundary of Ninxiang and Xiangxiang County in Hunan;
湖南宁乡与湘乡边界东段的方言状况
The Boundary Element Method Suitable for N-leaves Complicated Shape of Floating-ring Bearing
N-叶复杂形状浮环轴承的边界元方法
Results The normal Achilles tendon's contour was regular and sharply defined, appearing as tightly packed structures with fine parallel internal linear echoes. The attaching bone surface was smooth and continuous.
结果正常跟腱表现为边界清楚,由平行的高回声线构成的束状结构,止点骨面光滑连续。
The Boundary and Trace of Nietzsche's Aesthetics and Post?modern Dimension
尼采美学与后现代维度的边界与痕迹
Now the world is on the brink of another energy crisis.
现在世界又一次处在能源危机的边缘。
Research and Realization of Environmental Borderline Learning Method for Robots
机器人环境边界学习方法研究与实现