为简化计算或方便施测，施工平面控制网多由正方形或矩形格网组成，称为建筑方格网。
对于建筑方格网来说，重要的方面之一就是可以评定网中任意元素的精度。
As for building square grid, one of the important ways is to estimate the precision of any elements in the grid.
无对角线四边形法是建立建筑方格网中二级网的有效方法。对于建筑方格网来说，重要的方面之一是可以评定网中任意元素的精度。
One of the important factors involved in building a square grid is the way to estimate the precision of any elements in the grid.
第一套图纸的核心是对原建筑结构内九个方格网结构的改造。
A focus on figure ground transformationsrooted in a nine square grid inherent in the existing building structure serve as the armature for the first set of drawings.
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