... 平行四边形的底 base of a parallelogram 平行四边形的高 height of a parallelogram 有限广义四边形的对称 Symmetry in finite generalized quadrangles ...
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师：已知平行四边形的底和高，就可以求出它的面积。
Teacher: We can work out the area of a parallelogram if we know the base and height of it.
该线性化方法的误差主要来源于映射参数分布的不均匀性，对于常见的可用平行四边形剖分的膜，其逼近精度相当高。
The error of the present method mainly comes from the non-uniformity of the mapping parameters, and thus this method works very well for most membranes whose shapes are close to parallelogram.
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