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中文摘要：
研究了内部单节点张量积B样条曲面间G^1连续的条件．通过选择特殊类型的拼接函数，打破了公共边界必须是整体多项式曲线的限制，给出了以内部单节点双四次B样条曲面为工具、使用局部格式构造G^1连续曲面的算法．最后给出了计算实例．
英文摘要：
The G^1 continuity conditions between tensor product B-spline surfaces with single interior knots are studied. By means of selecting a special kind of blending functions, we broke the restriction that the common boundary must be a polynomial curve. Then we presented an algorithm to construct a G^1 continuous surface of biquartic B-spline surface patches with single interior knots by carrying out local scheme.
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