所述 的上中间辊与下中间辊的辊面部位对称制作设有一定的锥度。
The surface portions of the upper middle roller and the lower middle roller are symmetrically fabricated to form a certain conical degree.
手工艺品没有形状，也不对称，制作无方，质量低劣。
In its handicrafts there is no form or symmetry, method or quality.
平称对称可用来制作各种图案，例如平铺的网站背景和重复的设计元素。
Translational symmetry can be used to create patterns, such as in the case of tiled website backgrounds and repeating design elements.
应用推荐