vertical interval keyer

例句：

1. 1. The vertical interval key isused to measure the distance between two pointson a graph.
   垂直间隔键用于测量图表上两点之间的距离。
2. 2. The engineer used the verticalinterval key to calculate the angle between thetwo lines.
   工程师使用垂直间隔键来计算两条线之间的夹角。
3. 3. The verticalinterval key was used tocreate a grid system for mappingdata.
   垂直间隔键被用来创建数据映射的网格系统。