1) symmetrical deflection vibration
对称挠曲
2) hyperbolic symmetry
双曲对称
1.
To construct the patterns with hyperbolic symmetry which are composed of classical fractals,we compress the fractal sets into the hyperbolic limit disc by the hyperbolic symmetry transformations.
方法分析双曲对称群的特点,改造欧式平面上构造经典分形的IFS迭代函数系,利用这种迭代函数系与双曲平面对称变换构造出组合IFS,通过随机挑选组合IFS中的仿射变换,构造双曲排列的分形集。
2.
etc constructed a mapping of hyperbolic limit disc with the hyperbolic symmetry group [p,q]+.
等人利用双曲对称群的生成元构造出了具有[p,q]+对称的双曲极限圆迭代映射。
3.
To construct the images with hyperbolic symmetry [p,q]+ from Iterated Function Systems, the IFS with p-rotational symmetry characteristics , which were composed of multi-contraction affine transformations, were further compressed and rotated to the central lattice of a hyperbolic plane [p,q]+ .
通过双曲几何的等变换矩阵的双曲对称排列,将普通平面上的具有旋转对称特性的有界不变集排列在双曲圆内并生成[p,q]+双曲图案。
3) symmetric curved surface
对称曲面
1.
By means of discussing plane symmetry that relates to point, curved surface and curve in a three-dimensional space, this paper gives a method to study point?curved surface?plane symmetric point on a curve?symmetric curved surface and symmetric curve equation.
讨论了三维空间中,点、曲面、曲线关于平面的对称问题,从而给出了求点、曲面、曲线关于平面对称的对称点、对称曲面、对称曲线方程的方法。
4) symmetric curve
对称曲线
1.
By means of discussing plane symmetry that relates to point, curved surface and curve in a three-dimensional space, this paper gives a method to study point?curved surface?plane symmetric point on a curve?symmetric curved surface and symmetric curve equation.
讨论了三维空间中,点、曲面、曲线关于平面的对称问题,从而给出了求点、曲面、曲线关于平面对称的对称点、对称曲面、对称曲线方程的方法。
6) symmetric bending
对称弯曲
1.
The paper discusses the development of an ultrasonic symmetric bending fatigue system on the basis of the three-point bending method,including the design of ultrasonic symmetric bending samples and the influence of processing errors.
在二点弯曲超声疲劳试验方法的基础上开发了对称弯曲超声疲劳试验系统。
补充资料：对称与非对称
反映客观事物在结构、功能、时空上的特殊联系的范畴。对称指事物以一定的中介进行某种变化时出现的不变性，非对称指事物以一定的中介进行某种变化时出现的可变性。在自然界中普遍存在，形式多样。对称有空间对称(包括形象对称和结构对称)、时间对称、概念对称等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条