椭圆网点：用特别网片所造成的延长网点。它使中间色调部份的色调层次更为畅顺。
Elliptical dots: dots MADE by a special screen. These are elongated dots giving a smoother gradation of tone in middle-tones areas.
椭圆网点：用特别网片所造成的延长网点。它使中间色调部份的色调层次更为畅顺。
Elliptical dots: dots MADE by a special screen. These are elongated dots giving a smoother gradation of tone in middle-tones areas.
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