针对一类四次隐式代数曲面，提出一种基于分片的几何参数化方法。
This paper proposes a piecewise geometric approach to parametrize a kind of quartic implicit algebraic surface.
利用计算代数几何工具，研究了平面截口的隐式代数曲面的光滑拼接问题。
Studed the blending of implicit algebraic surfaces with the intersections on planes by using algebraic geometry.
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