An analog artifact where vertical edges in the picture display a spreading to the left or right.
在画面显示中，垂直线向左或向右移动的一种模拟的非自然信号。
The technical proposal of adopted by the invention is that vertical edges are arranged on a plastic mat.
本发明所采取的技术方案是在塑胶垫上设置竖边。
Two vertical edges of the utility model are overlapped and welded up or glued to form a main channel and an assistant channel.
此外，副通道以所需的一定间隔横向或斜向焊封或胶粘而分隔成纵向节段；
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