当你看到光彩夺目的鲜花时,是否知道花瓣对称开放具有几何美和力学美?绝大多数的花卉,为了适应自然环境,都有对称性的体型,其中有单轴对称、双轴对称、轴对称、旋转对称等。向上开放的花朵就常常具有轴对称或旋转对称的性质,因为这样可使受力状态相对于花蕊和花托处于最佳平衡态——在自重作用下抗弯折的能力是各向同性的。如木棉花,由于六瓣向上开放呈旋转对称,花蕊 When you see dazzling flowers, do you know whether the symmetrical opening of petals has geometric beauty and mechanical beauty? The vast majority of flowers, in order to adapt to the natural environment, have symmetrical body shapes, among which there are uniaxial symmetry, biaxial symmetry, and axis Symmetry, rotational symmetry, etc. The flowers that open upwards often have axisymmetric or rotational symmetry, because the state of stress can be optimally balanced with respect to the stamen and torus. The ability to resist bending under gravity is isotropic. Such as kapok, due to the six petals opening up to a rotationally symmetric, stamen