dots per inch

例句：

1. 1. The printer is set to print at a dot per inch of resolution.
   打印机设置为每英寸点数分辨率。
2. 2.The map shows the number of dots per inch on the road markings.
   地图上显示了道路标记上的每英寸点数。
3. 3. The artist used a dot-per-inch scale to draw his masterpiece.
   艺术家使用每英寸点数比例尺来绘制他的杰作。