A sharp temperature increase across the mid-mantle transition zone inhibits a simple downward-extrapolation from the near surfacedata.
中地幔过渡带有一个温度突然增加，因此不能根据近地表数据向下做简单的外推。
2
Surfacedata points are important for realizing products' computer-aided applications. CAM methods based on surfacedata point set are researched in this paper.
产品表面数据是计算机辅助应用的重要前提，研究了基于表面数据点集的产品CAM方法。
3
Using acoustic equation, the paper conducts spline interpolation for step surfacedata and results in quadrilateral grid partition coincident with relief surface.