Then, a new kind of so-called stratified triangulation of a simply connected planar polygonal region is introduced.
文中还定义了平面单连通多边形区域的所谓分层三角剖分，并确定了此剖分下二次样条空间的维数。
The polygonal reticulate structure is well developed and wide spread in the Pagoda Formation limestones in the whole Yangtze region.
网纹构造是宝塔组石灰岩地层中非常发育且分布广泛的一种构造形态 ，其成因一直存在争论和疑问。
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