However, in symmetry is hidden delusion, that is, only symmetry without absolute symmetry can incarnate beauty.
但对称中却隐藏着错觉，即对称而并非绝对对称才能体现美。
Given a lattice symmetry, larger absolute photonic band gap was achieved by selecting an air hole shape of the same symmetry.
给定晶格对称结构，选择具有相同对称形状的空气孔能得到较大的绝对光子带隙。
S-type blades are usually used in such fans because of the absolute geometrical symmetry.
由于几何形状完全对称，S型叶片是可逆风机中比较理想的叶片。
S-type blades are usually used in such fans because of the absolute geometrical symmetry.
由于几何形状完全对称，S型叶片是可逆风机中比较理想的叶片。
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