画面宾色制版网线角度不小众为45度。
Screen color sedan network Angle of 45 degrees the majority.
撞网图案：两块或多块半色调印版因相互的网线角度不配合而造成的不适当图案。
Moire pattern: Undesirable pattern caused by incorrect relative screen Angle of two or more half-tone plates.
圆网屏：是玻璃制的半色调网屏。它有着可以旋转的圆形外框，方便调换网线角度。
Circular screen: a glass halftone screen having a circular outside frame, to permit screen rotation, for convenient screen Angle selection.
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