?拼贴用平网

...Mechanical tint: Patterned sheet which can produce tonal effects on line drawing. Other than dot patterns in various sizes and concentrations, there are many other designs. 拼贴用平网:可在线条画上加明暗色调效果的图案单张。除有大小和疏密不同的点子图案外，还有很多其他设计。