撞子是采用金属、石料或其他硬质材料加工制成的，形状为圆球形、橄榄球形、多棱球形、圆柱形或多棱柱形。
The striking body is made of metals, stone materials or other hard materials, and the striking body is in the shape of a round ball, a football, a polygon ball, a column or a polygon prism.
一种多动能亭画帘移动装置，由棱柱体亭身夹层、画帘布、控制器等组成。
A kinetic energy shifter of a pavilion painting curtain comprises a prism interlayer of a pavilion body, a painting cord fabric and a controller, etc.
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