As well as taking up real 3D space, the images created by this single particle and a few low-cost lasers can be incredibly high-resolution, up to 1,600 dots per inch.
令人难以置信的高分辨率， 每英寸高达 1, 600 点。
Dots per inch
原声例句
自然杂志：科技
中文百科
每英寸点数
DPI（英语：Dots Per Inch，每英寸点数）是一个量度单位，用于点阵数字影像，意思是指每一英吋长度中，采样或可显示或输出点的数目。
打印机所设置之分辨率的DPI值越高，印出的图像会越精细。打印机通常可以调校分辨率。例如撞针打印机，分辨率通常是60至90 DPI。喷墨打印机则可达1200 DPI，甚至9600 DPI。激光打印机则有600至1200 DPI。
一般显示器为72 DPI，印刷所需位图的DPI数则视印刷网线数而定。一般150线印刷品质需要300 DPI的位图。而这里的D（dot）就是像素（pixel）。
英语百科
Dots per inch 每英寸点数
Dots per inch (DPI, or dpi) is a measure of spatial printing or video dot density, in particular the number of individual dots that can be placed in a line within the span of 1 inch (2.54 cm).
Monitors do not have dots, but do have pixels; the closely related concept for monitors and images is pixels per inch or PPI. Many resources, including the Android developer guide, use the terms DPI and PPI interchangeably.
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