The "Extrude along path" technique is a very powerful modelling tool. It consists of creating a surface by sweeping a given profile along a given path.
路径挤压’技术是一个非常强大的建模工具。它通过由给定的轮廓线沿着指定的路径伸展，就能创建一个面。
A new modelling method-shape surface elemental feature is created.
并提出了形面要素特征建模方法。
This paper is concerned with a geometric modelling system that integrates surface modelling with solid modelling.
本文描述了一个将曲面造型和实体造型技术统一起来的试验性几何造型系统。
A crystallographic model has been presented for the surface roughness modelling of thin sheet rolling.
提出了晶体学模型来研究多层薄膜滚压的表面粗糙度。
The model can be used as a research tool in the climate modelling through improvements of initial values, underlying surface boudaries, model diagnosis and graph treatment.
通过进一步完善初值处理、下垫面边值处理、模式后诊断及图形处理，使其成为一套可用于气候模拟研究的工具。
The sophisticated surface modelling is one of problems in engineering design, and it is a difficult problem to engineers.
复杂表面造型是工程设计中经常遇到的问题之一，也是工程设计人员感到棘手的难题。
The four aspects is as follow:(1) Modelling a free curved surface from the orthogonal projections and the normal vectersof controlling points.
这四个方面分别是：（1）已知数据点的正投影和曲面上数据点处的法线方向，构造自由曲面；
It is also unequivocally pointed out that the isometric operation cannot be precisely represented even if in a body surface modelling system which has the function of free curve modelling.
指出即使具有自由曲线造形功能的体素造形系统，也无法精确表示等距运算。
It is also unequivocally pointed out that the isometric operation cannot be precisely represented even if in a body surface modelling system which has the function of free curve modelling.
指出即使具有自由曲线造形功能的体素造形系统，也无法精确表示等距运算。
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