一种低速输入设备，它将图形和图象数据转换成用于数字计算机的二进制数值输入。 A low-speed input device that converts graphic and pictorial data into binary, numeric inputs for a digital computer.
在计算机图形学中，以常数值乘以图象的坐标来放大或缩小全部或部分显示图象。 In computer graphics, to enlarge or reduce all or part of a display image by multiplying their coordinate by constant values.
图形记录便显示了在短的间隙内先后到达的三种波。 The graphic record shows three waves arriving one after the other at short intervals.
