摈弃了目前国际上通常采用的周期边界条件，以及以平板代替曲面的做法。
The common calculating methods, i. e. using periodic boundary condition and curved surface replaced by flat plane, were discarded.
本文讨论四阶椭园方程一类周期问题的差分方法及在过渡面、自由曲面设计中的应用。
The paper discusses the difference method of solving the 4th ordered elliptic partial differential equations and its application to the design of blending and free form surfaces.
本文讨论四阶椭园方程一类周期问题的差分方法及在过渡面、自由曲面设计中的应用。
The paper discusses the difference method of solving the 4th ordered elliptic partial differential equations and its application to the design of blending and free form surfaces.
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